binder: revert needlessly parameter rename

This was needlessly renamed before even though there was no
conflict, revert it back

Author: Azkali

drivers/android/binder_alloc.c

@@ -42,7 +42,7 @@ enum {
 };
 static uint32_t binder_alloc_debug_mask;
 
-module_param_named(alloc_debug_mask, binder_alloc_debug_mask,
+module_param_named(debug_mask, binder_alloc_debug_mask,
 		   uint, 0644);
 
 #define binder_alloc_debug(mask, x...) \