ata: ahci_platform: Manage SATA PHY

Some platforms have a PHY hooked up to the SATA controller. The PHY
needs to be initialized and powered up for SATA to work. We do that
using the PHY framework.

tj: Minor comment formatting updates.

CC: Balaji T K <balajitk@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo<tj@kernel.org>
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index bf8100c..3ab7ac9 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -37,6 +37,7 @@
 
 #include <linux/clk.h>
 #include <linux/libata.h>
+#include <linux/phy/phy.h>
 #include <linux/regulator/consumer.h>
 
 /* Enclosure Management Control */
@@ -325,6 +326,7 @@
 	u32			em_msg_type;	/* EM message type */
 	struct clk		*clks[AHCI_MAX_CLKS]; /* Optional */
 	struct regulator	*target_pwr;	/* Optional */
+	struct phy		*phy;		/* If platform uses phy */
 	void			*plat_data;	/* Other platform data */
 	/*
 	 * Optional ahci_start_engine override, if not set this gets set to the