intel: mailbox: Enable sending large mailbox command

Allow mailbox command that is larger than mailbox command FIFO buffer
size to be sent to SDM in multiple chunks.

Signed-off-by: Abdul Halim, Muhammad Hadi Asyrafi <muhammad.hadi.asyrafi.abdul.halim@intel.com>
Change-Id: I683d5f1d04c4fdf57d11ecae6232b7ed3fc49e26
1 file changed