LPC17xx GPIO interrupt fixes: lpc17_setintedge() must be atomic.  Can't disable interrupts from interrupt handlers because they are automatically re-enabled.  Try re-configuring pin instead.

Move LPC17xx IOCON register definitions from lpc17_gpio.h to lpc17_iocon.h; fix a few more .gitignore files

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More naming changes associated with earlier renaming of LP17xx up_spiinitialize; LPC178x SSP support; Open1788 SSP and touchscreen support

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LPC17xx SPI and SSP initialization functions both called up_spiinitialize();  Changed to lpc17_spinitialize() and lpc17_sspinitialize().

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In LPC1788 24-bit color mode, we need to tell NX that the resolution if 32 bpp; Add interfaces to control Open1788 backlight

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