ACPICA: Add _PSx names to the METHOD_NAME list.

Will be used by iASL.
Signed-off-by: NBob Moore <robert.moore@intel.com>
Signed-off-by: NLv Zheng <lv.zheng@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

include/acpi/acnames.h

@@ -59,6 +59,10 @@
 #define METHOD_NAME__PRS        "_PRS"
 #define METHOD_NAME__PRT        "_PRT"
 #define METHOD_NAME__PRW        "_PRW"
+#define METHOD_NAME__PS0        "_PS0"
+#define METHOD_NAME__PS1        "_PS1"
+#define METHOD_NAME__PS2        "_PS2"
+#define METHOD_NAME__PS3        "_PS3"
 #define METHOD_NAME__REG        "_REG"
 #define METHOD_NAME__SB_        "_SB_"
 #define METHOD_NAME__SEG        "_SEG"