OMAP4: SDP4430: Add twl6040 codec platform support

Configure, and enable the twl6040 codec on SDP4430.

Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>