pldmfw: Don't require send_package_data or send_component_table to be defined

pldmfw: Don't require send_package_data or send_component_table to be defined

Not all drivers require send_package_data or send_component_table when
updating firmware. Instead of forcing drivers to implement a stub allow
these functions to go undefined.

Signed-off-by: Lee Trager <lee@trager.us>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250512190109.2475614-2-lee@trager.us
Signed-off-by: Paolo Abeni <pabeni@redhat.com>