sb/intel/lynxpoint: Drop unnecessary `UL` suffix

With BUILD_TIMELESS=1, Asrock B85M Pro4 and Google Wolf do not change.

Change-Id: I9ba4097cd82c4ff68315a40e1e955e4ed9a43862
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46719
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/lynxpoint/smihandler.c b/src/southbridge/intel/lynxpoint/smihandler.c
index 9a5e5c0..8b791f7 100644
--- a/src/southbridge/intel/lynxpoint/smihandler.c
+++ b/src/southbridge/intel/lynxpoint/smihandler.c
@@ -348,7 +348,7 @@
 	if (pm1_sts & PWRBTN_STS) {
 		/* power button pressed */
 		elog_gsmi_add_event(ELOG_TYPE_POWER_BUTTON);
-		disable_pm1_control(-1UL);
+		disable_pm1_control(-1);
 		enable_pm1_control(SLP_EN | (SLP_TYP_S5 << 10));
 	}
 }