mesa3d: use --enable-shared-glapi also for Gallium drivers

Needed since this upstream commit:
http://cgit.freedesktop.org/mesa/mesa/commit/configure.ac?h=10.2&id=0432aa064bf5d4d0ad8fc3c4d648b8feb238ddfa

Remove --disable-shared-glapi from the non-DRI-block, this
would break with enabled Gallium drivers.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mesa3d/mesa3d.mk

@@ -63,13 +63,13 @@ MESA3D_CONF_OPT += \
 	--without-gallium-drivers
 else
 MESA3D_CONF_OPT += \
+	--enable-shared-glapi \
 	--with-gallium-drivers=$(subst $(space),$(comma),$(MESA3D_GALLIUM_DRIVERS-y))
 endif
 
 ifeq ($(MESA3D_DRI_DRIVERS-y),)
 MESA3D_CONF_OPT += \
 	--disable-dri \
-	--disable-shared-glapi \
 	--without-dri-drivers
 else
 MESA3D_CONF_OPT += \