soc/amd/stoneyridge: Fix most checkpatch errors

soc/amd/stoneyridge: Fix most checkpatch errors

Correct the majority of reported errors and mark most of the
remaining ones as todo.  (Some of the lines requiring a >80
break are indented too much currently.)  Some of the alignment
in hudson.h still causes checkpatch errors, but this is
intentionally left as-is.

Also make other misc. changes, e.g. consistency in lower-case
for hex values, using defined values, etc.

These changes were confirmed to cause no changes in a Gardenia
build.  No other improvements were made, e.g. changing to helper
functions, or converting functions like __outbyte().

BUG=chrome-os-partner:622407746

Change-Id: I768884a4c4b9505e77f5d6bfde37797520878912
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/19986
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>