intel: common: Remove urgent from mailbox async

Remove urgent argument from asynchrounous mailbox command as any urgent
command should always be synchronous

Signed-off-by: Abdul Halim, Muhammad Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Change-Id: Iaa64335db24df3a562470d0d1c3d6a3a71493319
3 files changed