eth: fbnic: Add devlink firmware version info

eth: fbnic: Add devlink firmware version info

This adds support to show firmware version information for both stored and
running firmware versions. The version and commit is displayed separately
to aid monitoring tools which only care about the version.

Example output:
  # devlink dev info
  pci/0000:01:00.0:
    driver fbnic
    serial_number 88-25-08-ff-ff-01-50-92
    versions:
        running:
          fw 24.07.15-017
          fw.commit h999784ae9df0
          fw.bootloader 24.07.10-000
          fw.bootloader.commit hfef3ac835ce7
        stored:
          fw 24.07.24-002
          fw.commit hc9d14a68b3f2
          fw.bootloader 24.07.22-000
          fw.bootloader.commit h922f8493eb96
          fw.undi 01.00.03-000

Signed-off-by: Lee Trager <lee@trager.us>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20240905233820.1713043-1-lee@trager.us
Signed-off-by: Paolo Abeni <pabeni@redhat.com>