soc/intel/quark: Remove use of EDK-II macros and data types

Include assert.h to use coreboot's ASSERT macro.
Replace the use of UINT32 data type with uint32_t.
Replace the use of UINT8 data type with uint8_t.

TEST=Build and run on Galileo Gen2

Change-Id: I0bb7e43ea570f7b20355c5d05675ebf593942e83
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15858
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/soc/intel/quark/i2c.c

@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <assert.h>
 #include <console/console.h>
 #include <delay.h>
 #include <device/device.h>
@@ -166,7 +167,7 @@ int platform_i2c_transfer(unsigned bus, struct i2c_seg *segments, int count)
 	/* Finish reading the data bytes */
 	while (read_length > 0) {
 		status = regs->ic_status;
-		*buffer++ = (UINT8)regs->ic_data_cmd;
+		*buffer++ = (uint8_t)regs->ic_data_cmd;
 		read_length--;
 		bytes_transferred++;
 		status = regs->ic_status;