GPDMA driver for the LPC43xx.  The GPDMA block is basically the same as the LPC17xx.  Only the clock configuration is different and LPC43xx has four different DMA request sources, where LPC17xx has only two.

boardctl:  Add new command to start the NX server as a kernel thread.  Also refresh more configurations.

NX:  Remove configuration CONFIG_NX_NXSTART.  nx_start.c is now built unconditionally in multi-user mode.

Back out the last change.  I just noticed some complexities that need to be verified before this is released onto the world.

drivers/net/: Adapt all Ethernet drivers to work as though CONFIG_NET_MULTIBUFFER were set.  Remove all references to CONFIG_NET_MULTIBUFFER

include/: Remove all references to CONFIG_NET_MULTIBUFFER.  d_buf in struct net_driver_s is now always a pointer vs. an array.

arch/: Adapt all Ethernet drivers to work as though CONFIG_NET_MULTIBUFFER were set.  Remove all references to CONFIG_NET_MULTIBUFFER

sched_note: Permit spinlock and critical section notes in in-memory buffer iff sched_not_get() interfaces is disabled.

configs/misoc:  Add a sample directory containing generated sources.  This is really only useful for performing test builds.  You really must generate the Misoc architecture for a real-life build.

Misoc LM3: Add Misoc Ethernet driver.  Integrate network support into configs/misoc/hello.  Remove configs/misoc/include/generated directory.  I suppose the the intent now is that this is a symbolic link?  DANGER!  This means that you cannot compile this code with first generating these files a providing a symbolic link to this location!

sched_note: Add spinlock instrumentation; In SMP configurations, select to log only notes from certain CPUs