soc/intel/tigkerlake: Add IOM PCR PID

Required for accessing IOM REGBAR space.

Change-Id: Ic1c9beee69d184388f3e850744b3aeebe38eafbb
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52592
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/soc/intel/tigerlake/include/soc/pcr_ids.h

@@ -26,6 +26,7 @@
 #define PID_PSF3	0xbc
 #define PID_PSF4	0xbd
 #define PID_SCS		0xc0
+#define PID_IOM		0xc1
 #define PID_RTC		0xc3
 #define PID_ITSS	0xc4
 #define PID_ESPI	0xc7