msm: ipa: Fix misleading registers numbering

Correct misleading numbering of registers on ipa-hal.
Fix the range of start and end reg_n numbers.

Change-Id: Ib3335b782fd781b032bcfb7598e14157a027f4b6
Acked-by: Michal Amsterdam <mamsterd@qti.qualcomm.com>
Signed-off-by: Amir Levy <alevy@codeaurora.org>