samba4: add comment mmu depends

Otherwise it shows up indirectly when toolchain options aren't enough
and then vanishes when they are fulfilled.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/samba4/Config.in

@@ -22,3 +22,4 @@ config BR2_PACKAGE_SAMBA4
 comment "samba4 needs a toolchain w/ IPv6, wchar, largfile, threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_LARGEFILE || \
 		!BR2_USE_WCHAR || !BR2_INET_IPV6
+	depends on BR2_USE_MMU