Merge pull request #25 from wolfSSL/gc-section

Added -ffunction-sections -fdata-sections to CFLAGS to group unused symbols

Author: dgarske

Makefile

@@ -8,7 +8,7 @@
 include tools/config.mk
 
 ## Initializers
-CFLAGS:=-D__WOLFBOOT  -DWOLFBOOT_VERSION=$(WOLFBOOT_VERSION)UL
+CFLAGS:=-D__WOLFBOOT  -DWOLFBOOT_VERSION=$(WOLFBOOT_VERSION)UL -ffunction-sections -fdata-sections
 LSCRIPT:=config/target.ld
 LDFLAGS:=-T $(LSCRIPT) -Wl,-gc-sections -Wl,-Map=wolfboot.map -ffreestanding -nostartfiles
 OBJS:= \