ASoC: wm8903: Fix define for WM8903_VMID_RES_250K

VMID Control 0 BIT[2:1] is VMID Divider Enable and Select

00 = VMID disabled (for OFF mode)
01 = 2 x 50kΩ divider (for normal operation)
10 = 2 x 250kΩ divider (for low power standby)
11 = 2 x 5kΩ divider (for fast start-up)

So WM8903_VMID_RES_250K should be 2 << 1, which is 4.

Signed-off-by: Axel Lin <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>
Cc: [e-mail]

sound/soc/codecs/wm8903.h

···
 #define WM8903_VMID_BUF_ENA_WIDTH                    1  /* VMID_BUF_ENA */
 
 #define WM8903_VMID_RES_50K                          2
-#define WM8903_VMID_RES_250K                         3
+#define WM8903_VMID_RES_250K                         4
 #define WM8903_VMID_RES_5K                           6
 
 /*