Optimize XXHASH_{TARGETS,INSTALL_TARGETS} as suggested by Thomas
Petazzoni in
https://patchwork.ozlabs.org/project/buildroot/patch/20221228221522.280696-1-fontaine.fabrice@gmail.com/
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 3de4ae0121)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>