[ARM] nommu: trivial patch for arch/arm/lib/Makefile

ifeq ($CONFIG_PREEMPT,y) -> ifeq ($(CONFIG_PREEMPT),y)
Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/lib/Makefile

@@ -18,7 +18,7 @@ lib-y		:= backtrace.o changebit.o csumipv6.o csumpartial.o   \
 
 # the code in uaccess.S is not preemption safe and
 # probably faster on ARMv3 only
-ifeq ($CONFIG_PREEMPT,y)
+ifeq ($(CONFIG_PREEMPT),y)
   lib-y	+= copy_from_user.o copy_to_user.o
 else
 ifneq ($(CONFIG_CPU_32v3),y)