feat(libc): upgrade optimized-routines to v21.02

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I5cdca0ee82d3e8a164120fe3ecb6e94f2f89d600

lib/libc/Makefile

@@ -25,6 +25,13 @@ LOCAL_SRCS += \
 	$(OPTRTDIR)/string/arm/strcmp.S \
 	$(OPTRTDIR)/string/arm/strcpy.c \
 	$(OPTRTDIR)/string/arm/strlen-armv6t2.S
+
+LOCAL_CMACRO = \
+	-D__strlen_armv6t2=strlen \
+	-D__strcpy_arm=strcpy \
+	-D__strcmp_arm=strcmp \
+	-D__memcpy_arm=memcpy \
+	-D__memchr_arm=memchr
 endif
 
 LOCAL_SRCS += $(wildcard src/*.c src/*/*.c)
@@ -36,7 +43,7 @@ LOCAL_INCLUDE := \
 
 LOCAL_INCLUDE += $(addprefix -I$(MUSLPORTINGDIR)/, src/include src/internal)
 
-LOCAL_FLAGS := $(LOCAL_INCLUDE) $(LITEOS_GCOV_OPTS)
+LOCAL_FLAGS := $(LOCAL_INCLUDE) $(LITEOS_GCOV_OPTS) $(LOCAL_CMACRO)
 ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
 LOCAL_FLAGS +=-Wno-char-subscripts -Wno-unknown-pragmas
 else