orc: disable for uclinux

Fixes http://autobuild.buildroot.net/results/445/4456e49a6c33a80570b4f59ec9799a8d4a314af1/

The orc configure script doesn't recognize uclinux, so builds using
BR2_BINFMT_FLAT fails.  While this could be patched, orc doesn't have any
acceleration for blackfin and orc isn't a hard dependency of any other
package, so just disable it.

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

package/orc/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_ORC
 	bool "orc"
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_BINFMT_FLAT # configure doesn't know uclinux
 	help
 	  Orc is a library and set of tools for compiling and executing
 	  very simple programs that operate on arrays of data.
@@ -9,3 +10,4 @@ config BR2_PACKAGE_ORC
 
 comment "orc needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_BINFMT_FLAT