MdeModulePkg/CapsuleApp: Enhance CapsuleApp for Fmp Capsule Dependency

MdeModulePkg/CapsuleApp: Enhance CapsuleApp for Fmp Capsule Dependency

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2421

1. Enhance "CapsuleApp -P" to output the depex expression op-codes in
the EFI_FIRMWARE_IMAGE_DESCRIPTOR.
2. Enhance Last Attempt Status String with a new string to describe the
error LAST_ATTEMPT_STATUS_ERROR_UNSATISFIED_DEPENDENCIES.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Wei6 Xu <wei6.xu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>