mach-k3: common.c: add a flag for booting authenticated rproc binaries

mach-k3: common.c: add a flag for booting authenticated rproc binaries

The flag will be used for booting authenticated remote procs from hs-se
devices which can optionally be used in hs-fs devices also.

Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
Signed-off-by: Udit Kumar <u-kumar1@ti.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>