scripts/tags.sh: Fix obsolete parameter for ctags

Distros such as Fedora and Arch are using the maintained
universal-ctags implementation. This version has replaced
the obsolete --extra flag with --extras.

Signed-off-by: Philip K. Gisslow <ripxorip@gmail.com>
Link: https://lore.kernel.org/r/20210905073133.21910-1-ripxorip@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

scripts/tags.sh

@@ -247,6 +247,10 @@ setup_regex()
 
 exuberant()
 {
+	CTAGS_EXTRA="extra"
+	if $1 --version 2>&1 | grep -iq universal; then
+	    CTAGS_EXTRA="extras"
+	fi
 	setup_regex exuberant asm c
 	all_target_sources | xargs $1 -a                        \
 	-I __initdata,__exitdata,__initconst,__ro_after_init	\
@@ -261,7 +265,7 @@ exuberant()
 	-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL,ACPI_EXPORT_SYMBOL   \
 	-I DEFINE_TRACE,EXPORT_TRACEPOINT_SYMBOL,EXPORT_TRACEPOINT_SYMBOL_GPL \
 	-I static,const						\
-	--extra=+fq --c-kinds=+px --fields=+iaS --langmap=c:+.h \
+	--$CTAGS_EXTRA=+fq --c-kinds=+px --fields=+iaS --langmap=c:+.h \
 	"${regex[@]}"
 
 	setup_regex exuberant kconfig