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

- Enable Acoustic noise mitigation
- Set slow slew rate VCCIA and VCCGT to 8
- Set FastPkgCRampDisable VCCIA and VCCGT to 1

BUG=b:227165770
TEST=build FW and system power on.

Signed-off-by: leo.chou <leo.chou@lcfc.corp-partner.google.com>
Change-Id: I262ef14032e0e412c63403dbb8c8fbc6a8b03dd5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63442
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>

src/mainboard/google/brya/variants/taniks/overridetree.cb

@@ -36,6 +36,12 @@ fw_config
 	end
 end
 chip soc/intel/alderlake
+	# Acoustic settings
+	register "acoustic_noise_mitigation" = "1"
+	register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+	register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
+	register "fast_pkg_c_ramp_disable[VR_DOMAIN_IA]" = "1"
+	register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "1"
 	register "ext_fivr_settings" = "{
 		.configure_ext_fivr = 1,
 		.v1p05_enable_bitmap = FIVR_ENABLE_ALL_SX,