ppc: Fix compile error for boards with CONFIG_DDR_ECC

A bug was introduced by commit e94e460c
which affected non-MPC83xx/85xx/86xx ppc boards which had CONFIG_DDR_ECC
defined and resulted in errors such as:

Configuring for canyonlands board...
fsl_dma.c:50:2: error: #error "Freescale DMA engine not supported on your
processor"
make[1]: *** No rule to make target `.depend', needed by `libdma.a'.  Stop.
Signed-off-by: NPeter Tyser <ptyser@xes-inc.com>

include/asm-ppc/config.h

@@ -29,10 +29,11 @@
 #endif
 #endif
 
-#ifndef CONFIG_FSL_DMA
-#if ((!defined CONFIG_MPC83xx && defined(CONFIG_DDR_ECC) &&	\
-	!defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)) ||		\
-	(defined(CONFIG_MPC83xx) && defined(CONFIG_DDR_ECC_INIT_VIA_DMA)))
+/* Check if boards need to enable FSL DMA engine for SDRAM init */
+#if !defined(CONFIG_FSL_DMA) && defined(CONFIG_DDR_ECC)
+#if (defined(CONFIG_MPC83xx) && defined(CONFIG_DDR_ECC_INIT_VIA_DMA)) || \
+	((defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)) && \
+	!defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER))
 #define CONFIG_FSL_DMA
 #endif
 #endif