ethtool: upgrade 6.7 -> 6.9

Release notes:
* Feature: support for rx-flow-hash gtp (-N)
* Feature: support for RSS input transformation (-X)
* Fix: typo in coalescing output (-c)
* Fix: document all debugging flags in man page

(From OE-Core rev: 302bbd0fdb1b41ec98e281cacbb77a54ce8d689d)

Signed-off-by: Changhyeok Bae <changhyeok.bae@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/ethtool/ethtool/avoid_parallel_tests.patch

@@ -18,7 +18,7 @@ diff --git a/configure.ac b/configure.ac
 index c871558..8ea1eaa 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -3,7 +3,7 @@ AC_INIT(ethtool, 6.7, netdev@vger.kernel.org)
+@@ -3,7 +3,7 @@ AC_INIT(ethtool, 6.9, netdev@vger.kernel.org)
  AC_PREREQ(2.52)
  AC_CONFIG_MACRO_DIR([m4])
  AC_CONFIG_SRCDIR([ethtool.c])

meta/recipes-extended/ethtool/ethtool_6.9.bb

@@ -11,7 +11,7 @@ SRC_URI = "${KERNELORG_MIRROR}/software/network/ethtool/ethtool-${PV}.tar.gz \
            file://avoid_parallel_tests.patch \
            "
 
-SRC_URI[sha256sum] = "ace0e95a03b38208af4ebacb415244568ace44c5d5a279ea434844f900179c75"
+SRC_URI[sha256sum] = "0011fb1b20101879f2d01d39cd2bc1d9646990d07d64de893415404a3afc53ef"
 
 UPSTREAM_CHECK_URI = "https://www.kernel.org/pub/software/network/ethtool/"