disp: msm: refactor DSI debugbus dumping

Move DSI debugbus dumping logic from DSI driver to sde_dbg
in order to utilize the framework in place for debugbuses.

This allows for more control over the dumping logic, such
as where the dump data is stored(memory/console), via nodes
populated in debugfs.

Change-Id: Iff507fdaa02d26af26743e81f6048aec57c09a76
Signed-off-by: Steve Cohen <cohens@codeaurora.org>

msm/dsi/dsi_ctrl_hw.h

@@ -472,14 +472,6 @@ struct dsi_ctrl_hw_ops {
 	void (*config_clk_gating)(struct dsi_ctrl_hw *ctrl, bool enable,
 			enum dsi_clk_gate_type clk_selection);
 
-	/**
-	 * debug_bus() - get dsi debug bus status.
-	 * @ctrl:        Pointer to the controller host hardware.
-	 * @entries:     Array of dsi debug bus control values.
-	 * @size:        Size of dsi debug bus control array.
-	 */
-	void (*debug_bus)(struct dsi_ctrl_hw *ctrl, u32 *entries, u32 size);
-
 	/**
 	 * soft_reset() - perform a soft reset on DSI controller
 	 * @ctrl:          Pointer to the controller host hardware.