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

drivers/net/ethernet/broadcom/tg3.c

@@ -225,6 +225,7 @@ MODULE_AUTHOR("David S. Miller (davem@redhat.com) and Jeff Garzik (jgarzik@pobox
 MODULE_DESCRIPTION("Broadcom Tigon3 ethernet driver");
 MODULE_LICENSE("GPL");
 MODULE_FIRMWARE(FIRMWARE_TG3);
+MODULE_FIRMWARE(FIRMWARE_TG357766);
 MODULE_FIRMWARE(FIRMWARE_TG3TSO);
 MODULE_FIRMWARE(FIRMWARE_TG3TSO5);