libcec: needs wchar

Fixes:
http://autobuild.buildroot.net/results/dae/dae6ec4f75b2aeb793b88567f48d94b07a6a59da/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/libcec/Config.in

@@ -2,6 +2,7 @@ config BR2_PACKAGE_LIBCEC
 	bool "libcec"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_WCHAR
 	help
 	  libcec allows you in combination with the right hardware to
 	  control your home theater devices with your TV remote
@@ -9,5 +10,6 @@ config BR2_PACKAGE_LIBCEC
 
 	  http://libcec.pulse-eight.com
 
-comment "libcec requires C++ and threading support in toolchain"
-	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
+comment "libcec requires C++, WCHAR and threading support in toolchain"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_USE_WCHAR