OMAP4: sdp4430: Select CBL package for ES1 and initialize mux

Select the CBL package if SDP4430 is enabled during config.
Initialize the mux framework during the board init.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>