Altera-stapl: Clean up makefile (-y instead of -objs)

Changed Makefile to use <modules>-y instead of <modules>-objs
because -objs is deprecated.

Signed-off-by: Tracey Dent <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/altera-stapl/Makefile

···
-altera-stapl-objs = altera-lpt.o altera-jtag.o altera-comp.o altera.o
+altera-stapl-y := altera-lpt.o altera-jtag.o altera-comp.o altera.o
 
 obj-$(CONFIG_ALTERA_STAPL) += altera-stapl.o