fix(ufs): init utrlba/utrlbau with desc_base

Initialising these registers with header address will not work when
get_empty_slot returns anything other than 0 because these registers
should point to the starting of transfer request list instead of the
current descriptor

Change-Id: I60b3b59e2be6e2635a59b14dd1f11d93b9d95a1f
Signed-off-by: anans <anans@google.com>