qcacld-3.0: Fix an OOB issue in bmi_sign_stream_start()

Remaining may be greater than its original value when
(remaining & 0x3)!=0, then OOB occurs when memcpy.To address
this, align the remaining after doing memcpy.

Change-Id: I3e39a791a76a272e82beb6561375e26ca84ec0f4
CRs-Fixed: 2259721
1 file changed