mplayer: prevent selection on Microblaze and AArch64

MPlayer wants to have some "support" for each architecture, and for
now, it doesn't know about Microblaze and AArch64, so prevent the
selection of MPlayer on those architectures.

For Microblaze, fixes:

  http://autobuild.buildroot.org/results/4e6e0d15694345ded649c92251cc2173dc45fe7c/build-end.log

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/multimedia/mplayer/Config.in

@@ -1,8 +1,7 @@
 config BR2_PACKAGE_MPLAYER
 	bool "mplayer"
-	# "Error: unsupported architecture sh4a" says mplayer
-	# configure script.
-	depends on !BR2_sh4a && !BR2_sh4aeb
+	# Those architectures are not supported by MPlayer
+	depends on !BR2_sh4a && !BR2_sh4aeb && !BR2_microblaze && !BR2_aarch64
 	depends on BR2_LARGEFILE
 	help
 	  MPlayer is a movie player which runs on many systems and supports