gst1-imx: needs shared libraries

Fixes:
http://autobuild.buildroot.org/results/2d1/2d1b5077a7551cebe4b961d6ce1cf844ad83fb8c/

Otherwise waf configure fails with:
Checking for library dl                                      : not found
The configuration failed

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gst1-imx/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_GST1_IMX
 	bool "gst1-imx"
 	depends on BR2_arm # Only relevant for i.MX
+	depends on !BR2_STATIC_LIBS
 	select BR2_PACKAGE_GST1_PLUGINS_BASE
 	help
 	  This is a set of GStreamer 1.0 plugins for plugins for Freescale's
@@ -17,3 +18,7 @@ config BR2_PACKAGE_GST1_IMX
 	  The MP3 plugin is built when BR2_PACKAGE_IMX_CODEC is enabled.
 
 	  https://github.com/Freescale/gstreamer-imx
+
+comment "gst1-imx needs a toolchain w/ dynamic library"
+	depends on BR2_arm
+	depends on BR2_STATIC_LIBS