phy: phy-rcar-gen2: Fix USBHS_UGSTS_LOCK value

According to the technical update (No. TN-RCS-B011A/E), the UGSTS LOCK
bit location is bit 8, not bits 1 and 0. It also says that the register
address offset of UGSTS is 0x88, not 0x90.
So, this patch fixes the USBHS_UGSTS_LOCK value and some comments.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/phy-rcar-gen2.c

@@ -23,7 +23,7 @@
 #define USBHS_LPSTS			0x02
 #define USBHS_UGCTRL			0x80
 #define USBHS_UGCTRL2			0x84
-#define USBHS_UGSTS			0x88	/* The manuals have 0x90 */
+#define USBHS_UGSTS			0x88	/* From technical update */
 
 /* Low Power Status register (LPSTS) */
 #define USBHS_LPSTS_SUSPM		0x4000
@@ -41,7 +41,7 @@
 #define USBHS_UGCTRL2_USB0SEL_HS_USB	0x00000030
 
 /* USB General status register (UGSTS) */
-#define USBHS_UGSTS_LOCK		0x00000300 /* The manuals have 0x3 */
+#define USBHS_UGSTS_LOCK		0x00000100 /* From technical update */
 
 #define PHYS_PER_CHANNEL	2