package/gstreamer1/gst1-plugins-bad: webrtc needs sync_4

Commit [1] "package/gstreamer1/gst1-plugins-bad: bump version
to 1.24.11" added new requirements for webrtc which selects the
sctp plugin, but forgot to propagate its dependencies. The sctp
plugin depends on BR2_TOOLCHAIN_HAS_SYNC_4.

This commit fixes this issue.

Fixes:

    WARNING: unmet direct dependencies detected for BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_SCTP
      Depends on [n]: BR2_PACKAGE_GSTREAMER1 [=y] && BR2_PACKAGE_GST1_PLUGINS_BAD [=y] && BR2_TOOLCHAIN_HAS_SYNC_4 [=n]
      Selected by [y]:
      - BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_WEBRTC [=y] && BR2_PACKAGE_GSTREAMER1 [=y] && BR2_PACKAGE_GST1_PLUGINS_BAD [=y] && !BR2_STATIC_LIBS [=n]

[1] https://gitlab.com/buildroot.org/buildroot/-/commit/90b3cfedf44cc92289746aa30e439be409ca3747

Cc: Thomas Bonnefille <thomas.bonnefille@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gst1-plugins-bad/Config.in

@@ -659,6 +659,7 @@ config BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_WEBP
 config BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_WEBRTC
 	bool "webrtc"
 	depends on !BR2_STATIC_LIBS # libnice -> gnutls
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # gst1-plugins-bad sctp
 	select BR2_PACKAGE_GST1_PLUGINS_BASE # libgstsdp
 	select BR2_PACKAGE_LIBNICE
 	select BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_DTLS
@@ -669,6 +670,7 @@ config BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_WEBRTC
 
 comment "webrtc needs a toolchain w/ dynamic library"
 	depends on BR2_STATIC_LIBS
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 
 config BR2_PACKAGE_GST1_PLUGINS_BAD_PLUGIN_WEBRTCDSP
 	bool "webrtcdsp"