qemu: remove support for some PowerPC processors in host qemu

The 620, 630, and 970 are not supported at this time by qemu.

Signed-off-by: Adam Duskett <aduskett@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qemu/Config.in.host

@@ -6,6 +6,7 @@ config BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS
 		BR2_mips64       || BR2_mips64el    || BR2_powerpc      || \
 		BR2_powerpc64    || BR2_powerpc64le || BR2_sh           || \
 		BR2_sparc        || BR2_x86_64
+		depends on !BR2_powerpc_620 && !BR2_powerpc_630 && !BR2_powerpc_970
 
 config BR2_PACKAGE_HOST_QEMU
 	bool "host qemu"