soc/intel/common: Introduce ASL2.0 syntax

Fix last legacy ASL syntax match in acpi/pcr.asl

BUG=none
TEST=Deltan coreboot binary remains the same after the changes are
applied

Signed-off-by: Alexey Buyanov <alexey.buyanov@intel.com>
Change-Id: Ia1021851b42b8fad52b3197d9003056d3dd2db04
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42437
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/common/acpi/pcr.asl

@@ -8,8 +8,7 @@
  */
 Method (PCRB, 1, NotSerialized)
 {
-	Return (Add (CONFIG_PCR_BASE_ADDRESS,
-				ShiftLeft (Arg0, PCR_PORTID_SHIFT)))
+	Return (CONFIG_PCR_BASE_ADDRESS + (Arg0 << PCR_PORTID_SHIFT))
 }
 
 /*