ARM: OMAP4+: PRM: move omap_prm_base_init under OMAP4 PRM driver

There is no need to call this separately from io.c, rather this can be
done commonly under the PRM driver.
Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm/mach-omap2/io.c

@@ -623,7 +623,6 @@ void __init am43xx_init_early(void)
 				  NULL);
 	omap2_set_globals_prm(AM33XX_L4_WK_IO_ADDRESS(AM43XX_PRCM_BASE));
 	omap2_set_globals_cm(AM33XX_L4_WK_IO_ADDRESS(AM43XX_PRCM_BASE), NULL);
-	omap_prm_base_init();
 	omap_cm_base_init();
 	omap3xxx_check_revision();
 	am33xx_check_features();
@@ -654,7 +653,6 @@ void __init omap4430_init_early(void)
 	omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP4430_CM_BASE),
 			     OMAP2_L4_IO_ADDRESS(OMAP4430_CM2_BASE));
 	omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP4430_PRCM_MPU_BASE));
-	omap_prm_base_init();
 	omap_cm_base_init();
 	omap4xxx_check_revision();
 	omap4xxx_check_features();
@@ -690,7 +688,6 @@ void __init omap5_init_early(void)
 			     OMAP2_L4_IO_ADDRESS(OMAP54XX_CM_CORE_BASE));
 	omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE));
 	omap4_pm_init_early();
-	omap_prm_base_init();
 	omap_cm_base_init();
 	omap44xx_prm_init();
 	omap5xxx_check_revision();
@@ -722,7 +719,6 @@ void __init dra7xx_init_early(void)
 			     OMAP2_L4_IO_ADDRESS(OMAP54XX_CM_CORE_BASE));
 	omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE));
 	omap4_pm_init_early();
-	omap_prm_base_init();
 	omap_cm_base_init();
 	omap44xx_prm_init();
 	dra7xxx_check_revision();

arch/arm/mach-omap2/prm44xx.c

@@ -705,6 +705,8 @@ static struct prm_ll_data omap44xx_prm_ll_data = {
 
 int __init omap44xx_prm_init(void)
 {
+	omap_prm_base_init();
+
 	if (cpu_is_omap44xx() || soc_is_omap54xx() || soc_is_dra7xx())
 		prm_features |= PRM_HAS_IO_WAKEUP;