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/hid-input.c b/drivers/hid/hid-input.c
index 4824b19..25d180a 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -31,8 +31,6 @@
 #include <linux/slab.h>
 #include <linux/kernel.h>
 
-#undef DEBUG
-
 #include <linux/hid.h>
 #include <linux/hid-debug.h>
 
@@ -253,7 +251,7 @@
 
 	field->hidinput = hidinput;
 
-#ifdef DEBUG
+#ifdef CONFIG_HID_DEBUG
 	printk(KERN_DEBUG "Mapping: ");
 	hid_resolv_usage(usage->hid);
 	printk(" ---> ");
@@ -690,7 +688,7 @@
 	return;
 
 ignore:
-#ifdef DEBUG
+#ifdef CONFIG_HID_DEBUG
 	printk("IGNORED\n");
 #endif
 	return;