mb/google/brya/var/primus{4es}: Configure Acoustic noise mitigation

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

BUG=b:204844399
TEST=USE="project_primus emerge-brya coreboot" and verified
     the setting meets the audible noise specification

Signed-off-by: Casper Chang <casper_chang@wistron.corp-partner.google.com>
Change-Id: I0e0baf78a841278efda912cc5e4e9970329aacf6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60071
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

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

@@ -35,6 +35,12 @@ chip soc/intel/alderlake
 	register "gpio_pm[COMM_5]" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "MaxDramSpeed" = "3733"
+	# Acoustic settings
+  	register "AcousticNoiseMitigation" = "1"
+  	register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+  	register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
+  	register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1"
+  	register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1"
 
 	# Intel Common SoC Config
 	#+-------------------+---------------------------+

src/mainboard/google/brya/variants/primus4es/overridetree.cb

@@ -35,6 +35,12 @@ chip soc/intel/alderlake
 	register "gpio_pm[COMM_5]" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "MaxDramSpeed" = "3733"
+	# Acoustic settings
+  	register "AcousticNoiseMitigation" = "1"
+  	register "SlowSlewRate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+  	register "SlowSlewRate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
+  	register "FastPkgCRampDisable[VR_DOMAIN_IA]" = "1"
+  	register "FastPkgCRampDisable[VR_DOMAIN_GT]" = "1"
 
 	# Intel Common SoC Config
 	#+-------------------+---------------------------+