ARM: atmel: armv7: switch to use common timer functions

The commit 8dfafdd (Introduce common timer functions), add common
timer functions, we can use them directly.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
[rebase on current master]
Sigend-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/arch/arm/mach-at91/include/mach/sama5d3.h b/arch/arm/mach-at91/include/mach/sama5d3.h
index 227ba80..b749cb3 100644
--- a/arch/arm/mach-at91/include/mach/sama5d3.h
+++ b/arch/arm/mach-at91/include/mach/sama5d3.h
@@ -189,6 +189,9 @@
 #define PIO_SCDR_DIV		0x3fff
 #define CPU_HAS_PCR
 
+/* Timer */
+#define CONFIG_SYS_TIMER_COUNTER	0xfffffe3c
+
 /*
  * PMECC table in ROM
  */