IOB: Change suggested by Rony Xln
WGET: Fix from Rony Xln
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MXT Driver: Make sure that all return values are checked:  Fix worker thread -- it must hold the MXT device semaphore to access I2C
SAMA5D3/4 HEAP: Add a configuration option to reserve DRAM for a framebuffer when executing out of DRAM.
SAMA5D4 LCDC: Adapt the SAMA5D3 LCDC driver to work with the SAMA5D4 which has no hardware cursor
SAMA5D4-EK: Add options to support an LCD
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Merge branch 'master' into dev

Conflicts:
	nuttx/net/iob/iob_trimhead.c