generic: add missing patch headers

Make sure all patches can be applied to a git tree using 'git am'
by adding missing patch headers where needed.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

target/linux/generic/hack-6.6/781-usb-net-rndis-support-asr.patch

@@ -1,3 +1,16 @@
+From 9fabf60187f1fa19e6f6bb5441587d485bd534b0 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Tue, 9 Apr 2024 17:06:38 +0100
+Subject: [PATCH] rndis_host: add a bunch of USB IDs
+
+Add a bunch of USB IDs found in various places online to the
+RNDIS USB network driver.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ drivers/net/usb/rndis_host.c | 40 ++++++++++++++++++++++
+ 1 file changed, 40 insertions(+)
+
 --- a/drivers/net/usb/rndis_host.c
 +++ b/drivers/net/usb/rndis_host.c
 @@ -630,6 +630,16 @@ static const struct driver_info	zte_rndi