soc/intel/common/smm: Add missing printk statement

SMI trap handler was missing a printk statement, which caused
Coverity to flag "data &= mask;" as a redundant operation.

Change-Id: I71da74e5e08e7d7e6d61c1925db19324efd73f0a
Found-by: Coverity CID 1381621
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34797
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>

src/soc/intel/common/block/smm/smitraphandler.c

@@ -108,6 +108,7 @@ void smihandler_southbridge_monitor(
 			/* Trapped write data */
 			data = pcr_read32(PID_PSTH, PCR_PSTH_TRPD);
 			data &= mask;
+			printk(BIOS_DEBUG, "  iotrap read data = 0x%08x\n", data);
 		}
 	}