cmake: Remove -O3 from release CFLAGS. Honor the OpenWRT -Os flag instead.

SVN-Revision: 25372

include/cmake.mk

@@ -9,6 +9,8 @@ define Build/Configure/Default
 			-DCMAKE_SYSTEM_VERSION=1 \
 			-DCMAKE_SYSTEM_PROCESSOR=$(ARCH) \
 			-DCMAKE_BUILD_TYPE=Release \
+			-DCMAKE_C_FLAGS_RELEASE="-DNDEBUG" \
+			-DCMAKE_CXX_FLAGS_RELEASE="-DNDEBUG" \
 			-DCMAKE_C_COMPILER=$(TOOLCHAIN_DIR)/bin/$(TARGET_CC) \
 			-DCMAKE_CXX_COMPILER=$(TOOLCHAIN_DIR)/bin/$(TARGET_CXX) \
 			-DCMAKE_EXE_LINKER_FLAGS="$(TARGET_LDFLAGS)" \