intel: ipu3: Use array instead of map in Intel3AIpcCmdToString()

Intel3AIpcCmdToString() is one help function to
convert the Intel 3A IPC command from enum to string.

The global variable's construct and destruct sequence
in C++ is not fixed, so use unordered_map as global variable
will cause failure.

BUG=b:62358788
TEST=Build and deploy package to poppy and camera works

Change-Id: I1dafcdb22f73b98d45bd706294947f33b9df2b34
Signed-off-by: Yang Liang <liang.l.yang@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/714876
Commit-Ready: WeiX Meng <weix.meng@intel.com>
Tested-by: WeiX Meng <weix.meng@intel.com>
Reviewed-by: Hung-yu Wu <hywu@chromium.org>
1 file changed