checkpatch: ignore ETHTOOL_LINK_MODE_ enum values

Since commit 4104a206 ("checkpatch: ignore generated CamelCase defines
and enum values") enum values like ETHTOOL_LINK_MODE_Asym_Pause_BIT are
ignored.  But there are other enums like
ETHTOOL_LINK_MODE_1000baseT_Full_BIT, which are not ignored because of the
not matching '1000baseT' substring.

Add regex to match all ETHTOOL_LINK_MODE enums.

Link: https://lkml.kernel.org/r/20230104201524.28078-1-gerhard@engleder-embedded.comSigned-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Gerhard Engleder <gerhard@engleder-embedded.com>
Cc: Joe Perches <joe@perches.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

scripts/checkpatch.pl

@@ -5809,6 +5809,8 @@ sub process {
 			    $var !~ /^(?:[A-Z]+_){1,5}[A-Z]{1,3}[a-z]/ &&
 #Ignore Page<foo> variants
 			    $var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
+#Ignore ETHTOOL_LINK_MODE_<foo> variants
+			    $var !~ /^ETHTOOL_LINK_MODE_/ &&
 #Ignore SI style variants like nS, mV and dB
 #(ie: max_uV, regulator_min_uA_show, RANGE_mA_VALUE)
 			    $var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&