mb/google/brya/var/marasov: Configure Acoustic noise mitigation

mb/google/brya/var/marasov: Configure Acoustic noise mitigation

- Enable Acoustic noise mitigation
- Set slow slew rate VCCIA and VCCGT to SLEW_FAST_8
- Set FastPkgCRampDisable VCCIA and VCCGT to 1

BUG=b:271788117
TEST=build FW and system power on.

Signed-off-by: Frank Chu <Frank_Chu@pegatron.corp-partner.google.com>
Change-Id: I411c91e1e70285afbf31750a56a039d60bbe093f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73491
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tracy Wu <tracy.wu@intel.corp-partner.google.com>
Reviewed-by: Kyle Lin <kylelinck@google.com>
Reviewed-by: Derek Huang <derekhuang@google.com>
Reviewed-by: Frank Chu <frank_chu@pegatron.corp-partner.google.com>