rauc: select host-squashfs as a host dependency

The rauc host tool (used to generate update bundles) runs mksquashfs so
host-squashfs is required for it to work at runtime.

Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/rauc/Config.in.host

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_HOST_RAUC
 	bool "host rauc"
+	select BR2_PACKAGE_HOST_SQUASHFS # run-time dependency
 	help
 	  RAUC is the Robust Auto-Update Controller developed by
 	  Pengutronix. Enable this option to build the rauc

package/rauc/rauc.mk

@@ -29,7 +29,7 @@ ifeq ($(BR2_PACKAGE_SYSTEMD),y)
 RAUC_DEPENDENCIES += systemd
 endif
 
-HOST_RAUC_DEPENDENCIES = host-pkgconf host-openssl host-libglib2
+HOST_RAUC_DEPENDENCIES = host-pkgconf host-openssl host-libglib2 host-squashfs
 HOST_RAUC_CONF_OPTS += --disable-network --disable-json --disable-service
 
 $(eval $(autotools-package))