ColdFire:Clean up the CONFIG_STANDALONE_LOAD_ADDR usage

Remove the additional linker options for CONFIG_STANDALONE_LOAD_ADDR
Signed-off-by: NJason Jin <Jason.jin@freescale.com>

arch/m68k/config.mk

@@ -23,8 +23,7 @@
 
 CROSS_COMPILE ?= m68k-elf-
 
-clibdir = $(shell dirname `$(CC) $(CFLAGS) -print-file-name=libc.a`)
-CONFIG_STANDALONE_LOAD_ADDR ?= 0x20000 -L $(clibdir)
+CONFIG_STANDALONE_LOAD_ADDR ?= 0x20000
 
 PLATFORM_CPPFLAGS += -DCONFIG_M68K -D__M68K__
 PLATFORM_LDFLAGS  += -n