xbmc: 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/xbmc/Config.in

@@ -5,6 +5,7 @@ config BR2_PACKAGE_XBMC_ARCH_SUPPORTS
 comment "xbmc needs a toolchain w/ C++, IPv6, largefile, threads, wchar"
 	depends on BR2_PACKAGE_XBMC_ARCH_SUPPORTS
 	depends on !BR2_INET_IPV6 || !BR2_INSTALL_LIBSTDCPP || !BR2_LARGEFILE || !BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR
+	depends on BR2_USE_MMU
 
 config BR2_PACKAGE_XBMC_EGL_GLES
 	bool