[ARM] 4187/1: iop: unify time implementation across iop32x, iop33x, and iop13xx

* architecture specific details are handled in asm/arch/time.h
* ARCH_IOP13XX now selects PLAT_IOP
* as suggested by Lennert use ifdef CONFIG_XSCALE to skip the cp_wait on
XSC3

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-iop32x/glantank.c b/arch/arm/mach-iop32x/glantank.c
index b9b7650..45f4f13 100644
--- a/arch/arm/mach-iop32x/glantank.c
+++ b/arch/arm/mach-iop32x/glantank.c
@@ -31,6 +31,7 @@
 #include <asm/mach/time.h>
 #include <asm/mach-types.h>
 #include <asm/page.h>
+#include <asm/arch/time.h>
 
 /*
  * GLAN Tank timer tick configuration.
@@ -38,12 +39,12 @@
 static void __init glantank_timer_init(void)
 {
 	/* 33.333 MHz crystal.  */
-	iop3xx_init_time(200000000);
+	iop_init_time(200000000);
 }
 
 static struct sys_timer glantank_timer = {
 	.init		= glantank_timer_init,
-	.offset		= iop3xx_gettimeoffset,
+	.offset		= iop_gettimeoffset,
 };