Blackfin arch: smp patch cleanup from LKML review

1. Use inline get_l1_... functions instead of macro
2. Fix compile issue about smp barrier functions

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/include/asm/system.h b/arch/blackfin/include/asm/system.h
index e8bcfa4..dea9203 100644
--- a/arch/blackfin/include/asm/system.h
+++ b/arch/blackfin/include/asm/system.h
@@ -66,10 +66,13 @@
 # define smp_mb()	do { barrier(); smp_check_barrier(); smp_mark_barrier(); } while (0)
 # define smp_rmb()	do { barrier(); smp_check_barrier(); } while (0)
 # define smp_wmb()	do { barrier(); smp_mark_barrier(); } while (0)
+#define smp_read_barrier_depends()	do { barrier(); smp_check_barrier(); } while (0)
+
 #else
 # define smp_mb()	barrier()
 # define smp_rmb()	barrier()
 # define smp_wmb()	barrier()
+#define smp_read_barrier_depends()	barrier()
 #endif
 
 static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
@@ -120,8 +123,6 @@
 	((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \
 		(unsigned long)(n), sizeof(*(ptr))))
 
-#define smp_read_barrier_depends()	smp_check_barrier()
-
 #else /* !CONFIG_SMP */
 
 #define smp_mb()	barrier()
@@ -192,6 +193,7 @@
  */
 
 #include <asm/l1layout.h>
+#include <asm/mem_map.h>
 
 asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next);