mfd: lpc_ich: Convert ICH GPIOs IDs to enum

All those IDs are arbitrary and so can be encapsulated into an enumeration.
Signed-off-by: Vincent Donnefort <vdonnefort@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

include/linux/mfd/lpc_ich.h

@@ -31,13 +31,15 @@
 #define ICH_RES_GPE0	1
 
 /* GPIO compatibility */
-#define ICH_I3100_GPIO		0x401
-#define ICH_V5_GPIO		0x501
-#define ICH_V6_GPIO		0x601
-#define ICH_V7_GPIO		0x701
-#define ICH_V9_GPIO		0x801
-#define ICH_V10CORP_GPIO	0xa01
-#define ICH_V10CONS_GPIO	0xa11
+enum {
+	ICH_I3100_GPIO,
+	ICH_V5_GPIO,
+	ICH_V6_GPIO,
+	ICH_V7_GPIO,
+	ICH_V9_GPIO,
+	ICH_V10CORP_GPIO,
+	ICH_V10CONS_GPIO,
+};
 
 struct lpc_ich_info {
 	char name[32];