bus: ti-sysc: Add otg quirk flags for omap3 musb

To prepare for probing omap3 musb with ti-sysc, these quirk flags are
needed similar to what we have for omap4.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Tested-by: Sicelo A. Mhlongo <absicsz@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>