samba4: add comment arch dependencies

Hide the comment for unsupported architectures.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/samba4/Config.in

@@ -20,5 +20,6 @@ config BR2_PACKAGE_SAMBA4
 	  http://www.samba.org/
 
 comment "samba4 needs a toolchain w/ IPv6, wchar, largfile, threads"
+	depends on BR2_arm || BR2_powerpc || BR2_x86_64
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_LARGEFILE || \
 		!BR2_USE_WCHAR || !BR2_INET_IPV6