drivers: phy: add PIPE3 phy driver

This phy is found on omap platforms with sata capabilities.
Except for the part related to the DM and the PHY framework, the code is
basically a copy paste from arch/arm/mach-omap2/pipe3-phy.c

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 75f459d..a91a694 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -41,4 +41,22 @@
 	  This select a dummy sandbox PHY driver. It used only to implement
 	  the unit tests for the phy framework
 
+config PIPE3_PHY
+	bool "Support omap's PIPE3 PHY"
+	depends on PHY && ARCH_OMAP2
+	help
+	  Support for the omap PIPE3 phy for sata
+
+	  This PHY is found on omap devices supporting SATA such as dra7, am57x
+	  and omap5
+
+config SPL_PIPE3_PHY
+	bool "Support omap's PIPE3 PHY in SPL"
+	depends on SPL_PHY && ARCH_OMAP2
+	help
+	  Support for the omap PIPE3 phy for sata in SPL
+
+	  This PHY is found on omap devices supporting SATA such as dra7, am57x
+	  and omap5
+
 endmenu