[ARM] pxa/sharpsl_pm: merge pxa-specific code into generic one

As pxa now is the only user of sharpsl_pm we can drop several startup
functions into generic code thus dropping several global functions.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/arch/arm/mach-pxa/spitz_pm.c b/arch/arm/mach-pxa/spitz_pm.c
index 2e44905..724ffb0 100644
--- a/arch/arm/mach-pxa/spitz_pm.c
+++ b/arch/arm/mach-pxa/spitz_pm.c
@@ -41,7 +41,6 @@
 {
 	pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN);
 	pxa_gpio_mode(SPITZ_GPIO_SYNC | GPIO_IN);
-	sharpsl_pm_pxa_init();
 }
 
 static void spitz_measure_temp(int on)
@@ -182,7 +181,7 @@
 
 struct sharpsl_charger_machinfo spitz_pm_machinfo = {
 	.init             = spitz_charger_init,
-	.exit             = sharpsl_pm_pxa_remove,
+	.exit             = NULL,
 	.gpio_batlock     = SPITZ_GPIO_BAT_COVER,
 	.gpio_acin        = SPITZ_GPIO_AC_IN,
 	.gpio_batfull     = SPITZ_GPIO_CHRG_FULL,