scsi: mpt3sas: Use Component img header to get Package ver

The firmware image layout has been changed for Aero controllers. All
compatible HBAs have to get Firmware Package version from Component Image
Header layout.

The Signature field in FW header is set to 0xEB000042 for products
compatible with Component Image Header.

For compatible controllers, driver fetches firmware package version from
ApplicationSpecific field of Component Image Header.

Link: https://lore.kernel.org/r/1568379890-18347-11-git-send-email-sreekanth.reddy@broadcom.com


Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>