Staging: keucr: Makefile: Makefile clean up

Changed <module>-objs to <module>-y in Makefile.
Also, Replace EXTRA_CFLAGS with ccflags-y.

Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>