mfd: stw481x: Make three arrays static const, reduces object code size

Don't populate the arrays vcore_val, vpll_val and vaux_val on the
stack, instead make them static const. Makes the object code smaller
by over 370 bytes:

Before:
text data bss dec hex filename
6971 3248 64 10283 282b drivers/mfd/stw481x.o

After:
text data bss dec hex filename
6338 3504 64 9906 26b2 drivers/mfd/stw481x.o

Signed-off-by: Colin Ian King <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/stw481x.c

···
 static int stw481x_startup(struct stw481x *stw481x)
 {
 	/* Voltages multiplied by 100 */
-	u8 vcore_val[] = { 100, 105, 110, 115, 120, 122, 124, 126, 128,
-			   130, 132, 134, 136, 138, 140, 145 };
-	u8 vpll_val[] = { 105, 120, 130, 180 };
-	u8 vaux_val[] = { 15, 18, 25, 28 };
+	static const u8 vcore_val[] = {
+		100, 105, 110, 115, 120, 122, 124, 126, 128,
+		130, 132, 134, 136, 138, 140, 145
+	};
+	static const u8 vpll_val[] = { 105, 120, 130, 180 };
+	static const u8 vaux_val[] = { 15, 18, 25, 28 };
 	u8 vcore;
 	u8 vcore_slp;
 	u8 vpll;