FROMGIT: scsi: ufs: core: Remove redundant desc_size variable from hba

Always read the descriptor with QUERY_DESC_MAX_SIZE.  According to the
spec, the device returns the actual size.

Change-Id: I29053a66d1f65f674fba6d7e1a6c6e7f546eec74
Signed-off-by: Arthur Simchaev <Arthur.Simchaev@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 258234315
(cherry picked from commit f2a89b07 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git

 for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>