mb/google/brya/var/brya4es: Enable CNVi ddr rfim

enable_cnvi_ddr_rfim enables DDR RFI mitigation feature, this feature
needs to be enabled for all brya variants. Currently, it's not enabled
for brya4es.

BUG=b:201724512
TEST=Build, boot brya4es and check function 3 in _DSM method under
\_SB.PCI0.WFA3

Signed-off-by: Varshit B Pandya <varshit.b.pandya@intel.com>
Change-Id: I6cc9d3e4721188dcbc8584596c9f3f89a737206f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65110
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-by: Meera Ravindranath <meera.ravindranath@intel.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/variants/brya4es/overridetree.cb

@@ -184,6 +184,7 @@ chip soc/intel/alderlake
 		device ref cnvi_wifi on
 			chip drivers/wifi/generic
 				register "wake" = "GPE0_PME_B0"
+				register "enable_cnvi_ddr_rfim" = "true"
 				device generic 0 on end
 			end
 		end