[ARM] pxa: add the missing AC97 pin configurations

Missing AC97 pin configurations are added where pxa_set_ac97_info() are
called for all pxa25x/pxa27x platforms. Where no exact configuration is
provided, use the default as in sound/arm/pxa2xx-ac97-lib.c

Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/e750.c b/arch/arm/mach-pxa/e750.c
index 5eccbce..af83caa 100644
--- a/arch/arm/mach-pxa/e750.c
+++ b/arch/arm/mach-pxa/e750.c
@@ -132,6 +132,12 @@
 	/* IrDA */
 	GPIO38_GPIO | MFP_LPM_DRIVE_HIGH,
 
+	/* AC97 */
+	GPIO28_AC97_BITCLK,
+	GPIO29_AC97_SDATA_IN_0,
+	GPIO30_AC97_SDATA_OUT,
+	GPIO31_AC97_SYNC,
+
 	/* Audio power control */
 	GPIO4_GPIO,  /* Headphone amp power */
 	GPIO7_GPIO,  /* Speaker amp power */