amd/stoneyridge: Create new wide IO functions

Create new generic wide IO functions in southbridge.c. These new
functions must be usable by kahlee/ec.c and amd/stoneyridge/lpc.c.

TEST=Just build at this stage, full boot to OS and verify serial output
at related change 14fdd03a83. Some extra outputs for testing removed
when code was committed.

Change-Id: Icd0841a1959f3e109b3c35fa35bb4b3c44099dc3
Signed-off-by: Richard Spiegel <>
Tested-by: build bot (Jenkins) <>
Reviewed-by: Martin Roth <>
2 files changed