amd/soc/common: Use relative offset for AMDFW

The amdfw.rom is mostly in region COREBOOT. Calculate the relative
address as the CBFS module address. That is for future 32M flash size
support.

TEST=binary identical test on amd/birman amd/majolica amd/gardenia
  amd/mayan amd/bilby amd/mandolin amd/chausie amd/pademelon
  pcengines/apu2
  google/skyrim google/guybrush google/zork google/kahlee google/myst

This commit is part of a series of patches to support 32/64M flash.
BUG=b:255374782

Change-Id: I2add8e4e6755e582b3be6a150cf83d1468f2f1be
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72961
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions