tpm: add PCR allocate into the eventlog handling

tpm: add PCR allocate into the eventlog handling

Get eventlog bank mask when parsing the eventlog from previous
boot stage and invoke PCR allocate function based on it.
PCR allocate will be proceeded if any dismatches observed among
the active, supportted and eventlog bank masks to re-configurate
the TPM with the proper algorithms and reboot the system.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>