Started moving things around for CPLD
finished CPLD schematic and started adding new discovery sheet
Removed the POW multiplexer lines and put the standard interrupt lines
Rearranged all the lines except for the power lines.
CPLD connection finished.
Switched the interrupt line location so that we can use one of the ADC channels for the audio.
Added backlight driver, connected to I2C1, annotated stuff
Restored CPLD sheet.
Modified labels on discover.sch and rearranged sheet disposition in the top-level schematic.
Removed obsolete and redundant datasheets and added the one for the new backlight controller.
Forgot to commit the actual changed files two commits ago.
cpld: Added two LEDS and removed the EXTIO0 and EXTI1 since they are already used by the sensor
discovery: Rearranged pins to connect both audio lines to adjacent ADCs as
well as to free up pins as a result of not using EXTI0 and EXTI1
f4_daughter: Moved around some stuff and changed relevant text
Annotated, removed duplicate datasheet and CPLD.sch
Revert "Added the SC4541 PWN controller to the library."

This reverts commit 40db6e345f4192e0264d7bd9cf1953b9c91446e5.
Revert "Put the SC4541 setup in the LCD sheet in buck topology."

This reverts commit 49a1ec046560eed971b78a640ae727a0fcab9c9b.
Merge branch 'add_cpld'