ethtool: update to 6.1

Release notes:
https://lore.kernel.org/netdev/20221219225600.r54vejiqapn266cm@lion.mk-sys.cz/T/

Add patches fixing compilation:
- 100-uapi-Bring-in-if-h.patch
- 101-netlink-Fix-maybe-uninitialized-meters-variable.patch
- 102-raw-marvell-c-Fix-build-with-musl-libc.patch

Signed-off-by: Nick Hainke <vincent@systemli.org>

package/network/utils/ethtool/patches/101-netlink-Fix-maybe-uninitialized-meters-variable.patch

@@ -0,0 +1,25 @@
+From:   Florian Fainelli <f.fainelli@gmail.com>
+To:     netdev@vger.kernel.org
+Subject: [PATCH ethtool v2 2/3] netlink: Fix maybe uninitialized 'meters' variable
+Date:   Sat, 14 Jan 2023 08:34:10 -0800
+
+GCC12 warns that 'meters' may be uninitialized, initialize it
+accordingly.
+
+Fixes: 9561db9b76f4 ("Add cable test TDR support")
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ netlink/parser.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/netlink/parser.c
++++ b/netlink/parser.c
+@@ -237,7 +237,7 @@ int nl_parse_direct_m2cm(struct nl_conte
+ 			 struct nl_msg_buff *msgbuff, void *dest)
+ {
+ 	const char *arg = *nlctx->argp;
+-	float meters;
++	float meters = 0.0;
+ 	uint32_t cm;
+ 	int ret;
+