serial: tty: msm_hs_uart: Fix the compat table

The compat tables in the msm_hs and msm_hsl drivers do
not have a null terminator structure at the end of the
array. Add them.

Change-Id: I86bd6f92805328099126ef852fca1eb18cbe4670
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>