Moved board specific values in config file

The lowlevel_init file contained some hard-coded values
to setup the RAM. These board related values are moved into
the board configuration file.
Signed-off-by: NStefano Babic <sbabic@denx.de>

arch/arm/cpu/arm_cortexa8/mx51/lowlevel_init.S

@@ -158,6 +158,7 @@
 	/* Switch peripheral to PLL 3 */
 	ldr r0, =CCM_BASE_ADDR
 	ldr r1, =0x000010C0
+	orr r1,r1,#CONFIG_SYS_DDR_CLKSEL
 	str r1, [r0, #CLKCTL_CBCMR]
 	ldr r1, =0x13239145
 	str r1, [r0, #CLKCTL_CBCDR]
@@ -171,6 +172,7 @@
 	ldr r1, =0x19239145
 	str r1, [r0, #CLKCTL_CBCDR]
 	ldr r1, =0x000020C0
+	orr r1,r1,#CONFIG_SYS_DDR_CLKSEL
 	str r1, [r0, #CLKCTL_CBCMR]
 
 	mov r3, #DP_OP_216
@@ -201,9 +203,10 @@
 	/* setup the rest */
 	/* Use lp_apm (24MHz) source for perclk */
 	ldr r1, =0x000020C2
+	orr r1,r1,#CONFIG_SYS_DDR_CLKSEL
 	str r1, [r0, #CLKCTL_CBCMR]
 	/* ddr clock from PLL 1, all perclk dividers are 1 since using 24MHz */
-	ldr r1, =0x59E35100
+	ldr r1, =CONFIG_SYS_CLKTL_CBCDR
 	str r1, [r0, #CLKCTL_CBCDR]
 
 	/* Restore the default values in the Gate registers */

include/configs/mx51evk.h

@@ -160,6 +160,9 @@
 #define PHYS_SDRAM_1		CSD0_BASE_ADDR
 #define PHYS_SDRAM_1_SIZE	(512 * 1024 * 1024)
 
+#define CONFIG_SYS_DDR_CLKSEL	0
+#define CONFIG_SYS_CLKTL_CBCDR	0x59E35100
+
 /*-----------------------------------------------------------------------
  * FLASH and environment organization
  */