gma500: Add support for Intel GMBUS

Before we integrate the new SDVO code we need GMBUS support

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index 5ec8edf..962c1b6 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -260,6 +260,12 @@
 	int enabled;
 };
 
+struct intel_gmbus {
+	struct i2c_adapter adapter;
+	struct i2c_adapter *force_bit;
+	u32 reg0;
+};
+
 struct psb_ops;
 
 #define PSB_NUM_PIPE		3
@@ -336,6 +342,9 @@
 	/* PCI revision ID for B0:D2:F0 */
 	uint8_t platform_rev_id;
 
+	/* gmbus */
+	struct intel_gmbus *gmbus;
+
 	/*
 	 * LVDS info
 	 */