ARM: OMAP2+: PRCM: split and relocate the PRM/CM globals setup

Split omap2_set_globals_prcm() into PRM, CM, and PRCM_MPU variants, since
these are all separate IP blocks.  This should make it easier to move the
PRM, CM, PRCM_MPU code into drivers/ in future patchsets.

At this point arch/arm/plat-omap/include/plat/prcm.h is empty; a
subsequent patch will remove it, and remove the #include from all the
files that #include it.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>

arch/arm/mach-omap2/prm_common.c

@@ -31,6 +31,7 @@
 #include "prm2xxx.h"
 #include "prm3xxx.h"
 #include "prm44xx.h"
+#include "common.h"
 
 /*
  * OMAP_PRCM_MAX_NR_PENDING_REG: maximum number of PRM_IRQ*_MPU regs
@@ -55,6 +56,9 @@ static struct irq_chip_generic **prcm_irq_chips;
  */
 static struct omap_prcm_irq_setup *prcm_irq_setup;
 
+/* prm_base: base virtual address of the PRM IP block */
+void __iomem *prm_base;
+
 /*
  * prm_ll_data: function pointers to SoC-specific implementations of
  * common PRM functions
@@ -328,6 +332,17 @@ err:
 	return -ENOMEM;
 }
 
+/**
+ * omap2_set_globals_prm - set the PRM base address (for early use)
+ * @prm: PRM base virtual address
+ *
+ * XXX Will be replaced when the PRM/CM drivers are completed.
+ */
+void __init omap2_set_globals_prm(void __iomem *prm)
+{
+	prm_base = prm;
+}
+
 /**
  * prm_read_reset_sources - return the sources of the SoC's last reset
  *