msm_fb: display: Vote for AXI Clock for DSI on 7x27A

Vote for a minimum rate of 65 MHz for AXI Clock while using
DSI interface on 7x27A

Signed-off-by: Pradeep Jilagam <pjilagam@codeaurora.org>

Conflicts:

	drivers/video/msm/msm_dss_io_7x27a.c