Staging: cx25821: Makefile: replace the use of <module>-objs with <module>-y

Changed <module>-objs to <module>-y in Makefile.
Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/cx25821/Makefile

-cx25821-objs   := cx25821-core.o cx25821-cards.o cx25821-i2c.o \
+cx25821-y   := cx25821-core.o cx25821-cards.o cx25821-i2c.o \
 		       cx25821-gpio.o cx25821-medusa-video.o \
 		       cx25821-video.o cx25821-video-upstream.o \
 		       cx25821-video-upstream-ch2.o \