HID: move away from DEBUG defines in favor of CONFIG_HID_DEBUG

CONFIG_INPUT_DEBUG is non-existent option, so remove anything depending
on it.

Also, as we have new CONFIG_HID_DEBUG, this should be used on places
where ifdef DEBUG was used before.

Suggested by Adrian Bunk.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 84c823e..52e97d8 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -1,19 +1,8 @@
 #
 # Makefile for the HID driver
 #
-
-# Multipart objects.
-hid-objs	:= hid-core.o hid-input.o
-
-# Optional parts of multipart objects.
-ifeq ($(CONFIG_HID_DEBUG),y)
-hid-objs	+= hid-debug.o
-endif
-
-ifeq ($(CONFIG_INPUT_DEBUG),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
-
+hid-objs			:= hid-core.o hid-input.o
 
 obj-$(CONFIG_HID)		+= hid.o
+hid-$(CONFIG_HID_DEBUG)		+= hid-debug.o