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/kernel/bfin_ksyms.c b/arch/blackfin/kernel/bfin_ksyms.c
index 763c315..01f917d 100644
--- a/arch/blackfin/kernel/bfin_ksyms.c
+++ b/arch/blackfin/kernel/bfin_ksyms.c
@@ -99,6 +99,8 @@
 EXPORT_SYMBOL(__raw_bit_test_clear_asm);
 EXPORT_SYMBOL(__raw_bit_test_toggle_asm);
 EXPORT_SYMBOL(__raw_uncached_fetch_asm);
+#ifdef __ARCH_SYNC_CORE_DCACHE
 EXPORT_SYMBOL(__raw_smp_mark_barrier_asm);
 EXPORT_SYMBOL(__raw_smp_check_barrier_asm);
 #endif
+#endif