ACPICA: Remove obsolete GPE function

Remove acpi_hw_write_gpe_enable_reg, it had been reduced down to a
single line of code, and called from only one place.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 56de460..7a6a3e6f 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -452,8 +452,12 @@
 		}
 	}
 
-	/* Enable this GPE */
-	(void)acpi_hw_write_gpe_enable_reg(gpe_event_info);
+	/*
+	 * Enable this GPE, conditionally. This means that the GPE will only be
+	 * physically enabled if the enable_for_run bit is set in the event_info
+	 */
+	(void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_COND_ENABLE);
+
 	return_VOID;
 }