src/soc/intel/braswell/include/soc/iomap.h: Correct IO_BASE_SIZE and ILB_BASE_SIZE

src/soc/intel/braswell/include/soc/iomap.h: Correct IO_BASE_SIZE and ILB_BASE_SIZE

The sizes of IO_BASE and ILB_BASE areas a incorrect.
Correct IO_BASE_SIZE and ILB_BASE_SIZE values.

BUG=N/A
TEST=Intel CherryHill CRB

Change-Id: I23c3fd608598c5ec2271d393168ac4bf406772b4
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/29392
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>