Change all Sony related copyright to conform with our company's internal rules.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>

lc823450 dvfs auto

* arch/arm/src/lc823450: Fix up_enable_irq() timing for I2S.

    In previous commit, I2S IRQ might be sometimes assigned to CPU1
    when CONFIG_SMP=y. This change fixes this issue.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* arch/arm/src/lc823450: Refactor timer driver.

    Introduce lc823450_timer.h and move lc823450_timerisr.c to
    lc823450_timer.c Add MTM timer APIs for DVFS.  Introduce
    up_rtc_gettime() for CONFIG_RTC_HIRES.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* arch/arm/src/lc823450: Introduce idle time calculation in DVFS

    Also, DVFS autonomous mode based on CPU idle time is supported.
    NOTE: voltage control is still disabled.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* configs/lc823450-xgevk: Update defconfigs

    Enable RTC_HIRES instead of RTC_DATETIME (audio/rndis)
    Disable TCP_WRITE_BUFFERS and change SCHED_LPWORKPRIORITY (rndis)

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* configs/lc823450-xgevk: Update README.txt

    Update SMP and DVFS related part

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>

This version only supports manual mode and Vdd1 is fixed to 1.2V.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

lc823450-xgevk audio support

* arch/arm/src/lc823450: Add IPL2 support

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* configs/lc823450-xgevk: Add IPL2 support

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* libc/audio: Fix compilation error in lib_buffer.c

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* drivers/audio: Add WM8774 support

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* arch/arm/src/lc823450: Add I2S support

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* configs/lc823450-xgevk: Add WM8774 support

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Add IPL2 support for LC823450

* arch/arm/src/lc823450: Add IPL2 support

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* configs/lc823450-xgevk: Add IPL2 support

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Approved-by: Gregory Nutt <gnutt@nuttx.org>

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

Move optimized ARM memcpy functions from arch/arm/src/ to libc/machine/.  This is necessary for the PROTECTED and KERNEL build modes.  Otherwise, memcpy() will be built in to kernel space and not accessible to applications.

Eliminate CONFIG_ARCH_OPTIMIZED_FUNCTIONS.  Move options to select architectur-specific C library options from libc/Kconfig to libc/machine/Kconfig and rename.

All architectures need to build ELF support if either CONFIG_ELF or CONFIG_MODULE are selected.  Cortex-M7 also must support module cache corherence

arch/arm/src/up_iternal.h and several ARM Make.defs files:  In the original implementation, NOT defined(CONFIG_ARMV7M_CMNVECTOR) was a sufficient test to determine if lazy floating point register saving was being used.  But recents changes added common lazy register as well so now that test must be (NOT defined(CONFIG_ARMV7M_CMNVECTOR) || defined(CONFIG_ARMV7M_LAZYFPU)).

Remove CONFIG_DEBUG_STACK.  Adding CONFIG_STACK_COLORATION makes this configuration option pointless

Remove CONFIG_DEBUG_STACK.  Adding CONFIG_STACK_COLORATION makes this configuration option pointless

Add CONFIG_STACK_COLORATION that does the same thing as CONFIG_DEBUG_STACK but without enabling debug.  From David Sidrane

Add CONFIG_STACK_COLORATION that does the same thing as CONFIG_DEBUG_STACK but without enabling debug.  From David Sidrane