PHY: Add driver for Pistachio USB2.0 PHY

Add a driver for the USB2.0 PHY found on the IMG Pistachio SoC.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: James Hartley <james.hartley@imgtec.com>
Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/9728/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index fc9b9f0..e840260 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -247,6 +247,13 @@
 	  This driver provides PHY interface for USB 3.0 DRD controller
 	  present on Exynos5 SoC series.
 
+config PHY_PISTACHIO_USB
+	tristate "IMG Pistachio USB2.0 PHY driver"
+	depends on MACH_PISTACHIO
+	select GENERIC_PHY
+	help
+	  Enable this to support the USB2.0 PHY on the IMG Pistachio SoC.
+
 config PHY_QCOM_APQ8064_SATA
 	tristate "Qualcomm APQ8064 SATA SerDes/PHY driver"
 	depends on ARCH_QCOM