omap3: Introduce weak misc_init_r

omap3: Introduce weak misc_init_r

Introduce a __weak misc_init_r function that just runs dieid_num_r().
Remove misc_init_r from cm_t35, mcx, omap3_logic and mt_ventoux as this was
all they did for misc_init_r.

Cc: Igor Grinberg <[email protected]>
Cc: Ilya Yanok <[email protected]>
Cc: Peter Barada <[email protected]>
Cc: Stefano Babic <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
Acked-by: Igor Grinberg <[email protected]>