ppc4xx: Add DDR1/2 macros in ppc4xx-sdram.h for non-405EX as well

This patch adds some DDR(2) macros to all PPC4xx's equipped with
this IBM DDR1/2 controller.

Signed-off-by: Stefan Roese <sr@denx.de>

arch/powerpc/include/asm/ppc4xx-sdram.h

@@ -344,6 +344,9 @@
 #define SDRAM_RXBAS_SDSZ_2048		SDRAM_RXBAS_SDSZ_2048MB
 #define SDRAM_RXBAS_SDSZ_4096		SDRAM_RXBAS_SDSZ_4096MB
 #define SDRAM_RXBAS_SDSZ_8192		SDRAM_RXBAS_SDSZ_8192MB
+#endif /* CONFIG_405EX */
+
+/* The mode definitions are the same for all PPC4xx variants */
 #define SDRAM_RXBAS_SDAM_MODE0		PPC_REG_VAL(23, 0x0)
 #define SDRAM_RXBAS_SDAM_MODE1		PPC_REG_VAL(23, 0x1)
 #define SDRAM_RXBAS_SDAM_MODE2		PPC_REG_VAL(23, 0x2)
@@ -356,7 +359,6 @@
 #define SDRAM_RXBAS_SDAM_MODE9		PPC_REG_VAL(23, 0x9)
 #define SDRAM_RXBAS_SDBE_DISABLE	PPC_REG_VAL(31, 0x0)
 #define SDRAM_RXBAS_SDBE_ENABLE		PPC_REG_VAL(31, 0x1)
-#endif /* CONFIG_405EX */
 
 /*
  * Memory controller registers