soc/intel/alderlake: Add CPU ID 0x906a4

TEST=Build and boot brya

Signed-off-by: Meera Ravindranath <meera.ravindranath@intel.com>
Change-Id: I4342c7343876eb40c2955f6f4dd99d6346852dc0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57610
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Varshit B Pandya <varshit.b.pandya@intel.com>
diff --git a/src/soc/intel/alderlake/bootblock/report_platform.c b/src/soc/intel/alderlake/bootblock/report_platform.c
index a053c70..2fc8eab 100644
--- a/src/soc/intel/alderlake/bootblock/report_platform.c
+++ b/src/soc/intel/alderlake/bootblock/report_platform.c
@@ -26,6 +26,7 @@
 	{ CPUID_ALDERLAKE_A0, "Alderlake Platform" },
 	{ CPUID_ALDERLAKE_A1, "Alderlake Platform" },
 	{ CPUID_ALDERLAKE_A2, "Alderlake Platform" },
+	{ CPUID_ALDERLAKE_A3, "Alderlake Platform" },
 };
 
 static struct {