package: declare target variant before host variant

package: declare target variant before host variant

Our package infrastructure uses inheritance of a number of values from
the target package to the host package, which assumes the target
package is defined before the host package. In addition, future
changes are going to make this requirement even more important.

Therefore, let's fix the android-tools, gauche, lcms2,
linux-syscall-support and pngquant packages, so that they declare
their target variant before their host variant, like all other
packages in Buildroot.

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