Add MODULE_FIRMWARE() for FIRMWARE_TG357766.

Fixes a bug where on the M1 mac mini initramfs-tools fails to
include the necessary firmware into the initrd.

Fixes: c4dab506 ("tg3: Download 57766 EEE service patch firmware")
Signed-off-by: Tobias Heider <me@tobhe.de>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/ZJt7LKzjdz8+dClx@tobhe.de


Signed-off-by: Jakub Kicinski <kuba@kernel.org>