mainboard/intel/galileo: Remove use of EDK-II macros & data types

Add assert.h to use coreboot's ASSERT macro.
Replace the use of UINT8 data type with uint8_t.

TEST=Build and run on Galileo Gen2.

Change-Id: I0756b0f30b3488647530e2dd1a4ab62813815f3e
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15859
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed