phy: rcar-gen3-usb2, rcar-gen2: Use ARCH_RENESAS

Make use of ARCH_RENESAS in place of ARCH_SHMOBILE.
A now redundant dependency on OF is also dropped.

This is part of an ongoing process to migrate from ARCH_SHMOBILE to
ARCH_RENESAS the motivation for which being that RENESAS seems to be a more
appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/Kconfig

@@ -113,14 +113,14 @@ config PHY_MIPHY365X
 
 config PHY_RCAR_GEN2
 	tristate "Renesas R-Car generation 2 USB PHY driver"
-	depends on ARCH_SHMOBILE
+	depends on ARCH_RENESAS
 	depends on GENERIC_PHY
 	help
 	  Support for USB PHY found on Renesas R-Car generation 2 SoCs.
 
 config PHY_RCAR_GEN3_USB2
 	tristate "Renesas R-Car generation 3 USB 2.0 PHY driver"
-	depends on OF && ARCH_SHMOBILE
+	depends on ARCH_RENESAS
 	select GENERIC_PHY
 	help
 	  Support for USB 2.0 PHY found on Renesas R-Car generation 3 SoCs.