Blackfin: fix missed cache config renames

Looks like the big Kconfig cache split/rename missed one spot in the SMP
cache lock headers.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/include/asm/cache.h

@@ -38,10 +38,10 @@
 
 #if defined(CONFIG_SMP) && \
     !defined(CONFIG_BFIN_CACHE_COHERENT)
-# if defined(CONFIG_BFIN_ICACHEABLE) || defined(CONFIG_BFIN_L2_ICACHEABLE)
+# if defined(CONFIG_BFIN_EXTMEM_ICACHEABLE) || defined(CONFIG_BFIN_L2_ICACHEABLE)
 # define __ARCH_SYNC_CORE_ICACHE
 # endif
-# if defined(CONFIG_BFIN_DCACHEABLE) || defined(CONFIG_BFIN_L2_DCACHEABLE)
+# if defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) || defined(CONFIG_BFIN_L2_DCACHEABLE)
 # define __ARCH_SYNC_CORE_DCACHE
 # endif
 #ifndef __ASSEMBLY__