phy: Add MIPI D-PHY configuration options

Now that we have some infrastructure for it, allow the MIPI D-PHY phy's to
be configured through the generic functions through a custom structure
added to the generic union.

The parameters added here are the ones defined in the MIPI D-PHY spec, plus
the number of lanes in use. The current set of parameters should cover all
the potential users.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

include/linux/phy/phy.h

@@ -20,6 +20,8 @@
 #include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
 
+#include <linux/phy/phy-mipi-dphy.h>
+
 struct phy;
 
 enum phy_mode {
@@ -44,8 +46,12 @@ enum phy_mode {
 
 /**
  * union phy_configure_opts - Opaque generic phy configuration
+ *
+ * @mipi_dphy:	Configuration set applicable for phys supporting
+ *		the MIPI_DPHY phy mode.
  */
 union phy_configure_opts {
+	struct phy_configure_opts_mipi_dphy	mipi_dphy;
 };
 
 /**