This adds support for initializing of the ltdc controller and the lcd device connected on the stm32f429i-disco. The following methods are provided for the generic fb interface:

- up_fbinitialize
- up_fbgetvplane
- fb_uninitialize

The following methods are provided for the ltdc interface:

- up_ltdcgetlayer

Signed-off-by: Marco Krahl <ocram.lhark@gmail.com>

stm32f429i-disco: update board definition for the ili9341 LCD display. This configures all LCD settings for the RGB interface. Also adds a customer LCD display template.

Signed-off-by: Marco Krahl <ocram.lhark@gmail.com>

Tiva:  Fix configuration logic for IRQ interrupts.  The various parts support varying numbers of GPIO blocks and with varying capabilities to support interrupts on the pins of different GPIO blocks

Freedom KL25Z:  Update the CC3000 support to use the current CC300 interfaces.  From Alan Carvalho de Assis

A previous change increased the task name size allocation by one to hold a NUL terminator.  This changes reduces the configured name size by one so that no additional memory is used

Add basic board support for the DK-TM4C129X Connected Development Kit.  The initial commit is simply the TM4C123G Launchpad with naming changes

Unify sensor debug.  ADX driver was using input debug; LM75 and QENCODE that their own custom debug.  Now all use CONFIG_DEBUG_SENSOR, sndbg()

Freedom-KL25Z: Add board specific code to interface with ADXL345 driver.  From Alan Carvalho de Assis

TM4C123G LaunchPad:  Add initialization logic for an external AT24 EEPROM.  This is intended only to suppport testing of the Tiva I2C driver

Traveler:  Add logic to limit the frame rate.  This is kind of a silly feature -- why would you ever want to limit the frame rate?  Well, you need to that on the simulated platform to make bandwidth for other things to run like the simulated timer