Add simple PMIO & PMIO2 read/write routines to CIMX wrapper

These are the PMIO & PMIO2 read & write routines from
src/southbridge/amd/sb800/sb800.c & sb800.h for use in the cimx
tree.  Currently most platforms using CIMX are calling WritePMIO()
directly from the src/vendorcode/amd/cimx/sbX00 directories
instead of using a wrapper function.
These functions only do byte reads & writes.

Change-Id: I881a6e2d4ddbba3dbdf4dd33e06313fe88b3682a
Signed-off-by: Martin L Roth <martin@se-eng.com>
Reviewed-on: http://review.coreboot.org/981
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
3 files changed