net: wwan: iosm: correct open parenthesis alignment

Fix checkpatch warning in iosm_ipc_mmio.c
- Alignment should match open parenthesis

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>