package/makedumpfile: add mips64 support

mips64 is supported since bump to version 1.6.9 in commit
cb648d12fa733788cd2ea8e0fa8b00bb95983c4e and
https://github.com/makedumpfile/makedumpfile/commit/7f185d29aa1794a82a090c748aae2f7bf240fb49

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/makedumpfile/Config.in

@@ -3,6 +3,7 @@ config BR2_PACKAGE_MAKEDUMPFILE_ARCH_SUPPORTS
 	default y if BR2_aarch64 || BR2_aarch64_be
 	default y if BR2_arm || BR2_armeb
 	default y if BR2_i386 || BR2_x86_64
+	default y if BR2_mips64 || BR2_mips64el
 	default y if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
 	default y if BR2_s390x
 	default y if BR2_sparc64