Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/input/mouse/hgpk.h b/drivers/input/mouse/hgpk.h
index 98b7b38..ce04159 100644
--- a/drivers/input/mouse/hgpk.h
+++ b/drivers/input/mouse/hgpk.h
@@ -47,22 +47,15 @@
 	int xsaw_secondary, ysaw_secondary; /* jumpiness detection */
 };
 
-#ifdef CONFIG_MOUSE_PS2_OLPC
-void hgpk_module_init(void);
 int hgpk_detect(struct psmouse *psmouse, bool set_properties);
 int hgpk_init(struct psmouse *psmouse);
+
+#ifdef CONFIG_MOUSE_PS2_OLPC
+void hgpk_module_init(void);
 #else
 static inline void hgpk_module_init(void)
 {
 }
-static inline int hgpk_detect(struct psmouse *psmouse, bool set_properties)
-{
-	return -ENODEV;
-}
-static inline int hgpk_init(struct psmouse *psmouse)
-{
-	return -ENODEV;
-}
 #endif
 
 #endif