package/luajit: building for 64-bit target requires a 64-bit host for all platform

Currently only x86_64 target requires a 64-bit host but building
aarch64 target with a 32-bit host is allowed.

This constraint is for all architectures [1].

[1] http://lists.busybox.net/pipermail/buildroot/2021-November/628301.html

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Francois Perrad <francois.perrad@gadz.org>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/luajit/Config.in

@@ -1,13 +1,15 @@
 config BR2_PACKAGE_LUAJIT_ARCH_SUPPORTS
 	bool
 	default y if BR2_arm || BR2_armeb || BR2_aarch64
-	default y if BR2_i386 || (BR2_x86_64 && BR2_HOSTARCH='x86_64')
+	default y if BR2_i386 || BR2_x86_64
 	default y if (BR2_mips || BR2_mipsel) && !BR2_MIPS_SOFT_FLOAT \
 		&& !BR2_MIPS_CPU_MIPS32R6 && !BR2_MIPS_CPU_MIPS64R6
 	default y if BR2_powerpc
 	# -m32 flag is used for 32bit builds and host-luajit has
 	# limited architecture support
 	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
+	# Building for 64-bit target requires a 64-bit host
+	depends on !BR2_ARCH_IS_64 || BR2_HOSTARCH = "x86_64"
 
 config BR2_PACKAGE_LUAJIT
 	bool "luajit"