ppc: Clean up calling of misc_init_r() during init

Remove board-specific #ifdefs for calling misc_init_r() during
initializtion

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Acked-by: Heiko Schocher <hs@denx.de>
diff --git a/include/configs/sc3.h b/include/configs/sc3.h
index 7e00ab8..5763760 100644
--- a/include/configs/sc3.h
+++ b/include/configs/sc3.h
@@ -63,6 +63,7 @@
 #define CONFIG_405GP	1
 
 #define CONFIG_BOARD_EARLY_INIT_F	1
+#define CONFIG_MISC_INIT_R		1	/* Call misc_init_r() */
 
 /*
  * Define IDE_USES_ISA_EMULATION for slower IDE access in the ISA-IO address range