powerpc/85xx: Enable HWCONFIG on MPC8572DS

We need HWCONFIG to allow configuration of DDR params

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

include/configs/MPC8572DS.h

@@ -202,6 +202,7 @@
 
 #define CONFIG_BOARD_EARLY_INIT_R	/* call board_early_init_r function */
 
+#define CONFIG_HWCONFIG			/* enable hwconfig */
 #define CONFIG_FSL_PIXIS	1	/* use common PIXIS code */
 #define PIXIS_BASE	0xffdf0000	/* PIXIS registers */
 #ifdef CONFIG_PHYS_64BIT