Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/mach-s3c64xx/setup-usb-phy.c b/arch/arm/mach-s3c64xx/setup-usb-phy.c
index 46a9e95..6aaaa1d 100644
--- a/arch/arm/mach-s3c64xx/setup-usb-phy.c
+++ b/arch/arm/mach-s3c64xx/setup-usb-phy.c
@@ -15,6 +15,11 @@
 #include "regs-sys.h"
 #include "regs-usb-hsotg-phy.h"
 
+enum samsung_usb_phy_type {
+	USB_PHY_TYPE_DEVICE,
+	USB_PHY_TYPE_HOST,
+};
+
 static int s3c_usb_otgphy_init(struct platform_device *pdev)
 {
 	struct clk *xusbxti;