missing underscore in 3.3 regmap patch

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 35018

target/linux/generic/patches-3.3/270-regmap_dynamic.patch

@@ -29,7 +29,7 @@
 -obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o
 -obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
 +regmap-core-objs = regmap.o regcache.o regcache-rbtree.o regcache-lzo.o
-+ifdef CONFIG_DEBUGFS
++ifdef CONFIG_DEBUG_FS
 +regmap-core-objs += regmap-debugfs.o
 +endif
 +obj-$(CONFIG_REGMAP) += regmap-core.o