phy: add Broadcom Kona USB2 PHY driver

Add a driver for the internal Broadcom Kona USB 2.0 PHY found
on the BCM281xx family of SoCs.

Signed-off-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 330ef2d..a49e853 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -51,4 +51,10 @@
 	help
 	  Support for Display Port PHY found on Samsung EXYNOS SoCs.
 
+config BCM_KONA_USB2_PHY
+	tristate "Broadcom Kona USB2 PHY Driver"
+	depends on GENERIC_PHY
+	help
+	  Enable this to support the Broadcom Kona USB 2.0 PHY.
+
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