procd: compile with LTO enabled

Reduces .ipk size on MIPS from 42k to 39k

Signed-off-by: Felix Fietkau <[email protected]>

package/system/procd/Makefile

@@ -37,6 +37,9 @@ endif
 CMAKE_OPTIONS += -DEARLY_PATH="$(TARGET_INIT_PATH)"
 TARGET_LDFLAGS += $(if $(CONFIG_USE_GLIBC),-lrt)
 
+TARGET_CFLAGS += -flto
+TARGET_LDFLAGS += -flto
+
 define Package/procd
   SECTION:=base
   CATEGORY:=Base system