MA-15019-1 Support Manufacture Protection public key generation

MA-15019-1 Support Manufacture Protection public key generation

Add new keymaster commands to get Manufacure Production key (mppubk).
Since the mppubk can only be generated in OEM CLOSED imx8q board, so
we can only use this command when the board is HAB/AHAB closed.

Commands to extract the mppubk:
        * $fastboot oem get-mppubk
        * $fastboot get_staged mppubk.bin

Test: Generate and dump the mppubk.bin

Change-Id: Idc59e78ca6345497e744162664b8293f50d1eda4
Signed-off-by: Ji Luo <ji.luo@nxp.com>
(cherry picked from commit 52300d644a275dfa4fe73ecb51601a8efaff8ab7)