disp: msm: dsi: Mask overflow error for Broadcast command

Currently, for Dual DSI Broadcast command, Overflow error
is masked only for master controller. This changes add
support to mask overflow error for slave controller as well.

Change-Id: Ida73c4166e996fcf2c8c936d0c76d0a89a220d89
Signed-off-by: Harigovindan P <harigovi@codeaurora.org>
Signed-off-by: Ritesh Kumar <riteshk@codeaurora.org>