[Blackfin] arch: Fix bug to Enable kernel to build for bf548 with PM.

On BF548-EZKIT, build kernel faills with power management, video and audio enabled.
This patch fix this.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/include/asm-blackfin/mach-bf548/mem_init.h b/include/asm-blackfin/mach-bf548/mem_init.h
index 0cb279e..e792eb7 100644
--- a/include/asm-blackfin/mach-bf548/mem_init.h
+++ b/include/asm-blackfin/mach-bf548/mem_init.h
@@ -30,6 +30,7 @@
  */
 
 #if (CONFIG_MEM_MT46V32M16)
+#endif
 
 #if defined CONFIG_CLKIN_HALF
 #define CLKIN_HALF       1