resize-rootfs: define S and use UNPACKDIR

Since whinlatter it is expected that S is set correctly to the local
source files, and that UNPACKDIR gets used instead of WORKDIR.

Signed-off-by: Ricardo Salveti <ricardo.salveti@oss.qualcomm.com>

Author: ricardosalveti

recipes-bsp/resize-rootfs/resize-rootfs_1.0.bb

@@ -10,10 +10,12 @@ SRC_URI += "\
 inherit features_check systemd
 REQUIRED_DISTRO_FEATURES = "systemd"
 
+S = "${UNPACKDIR}"
+
 do_install:append:qcom() {
-    install -Dm 0644 ${WORKDIR}/sources/growfs-root.preset \
+    install -Dm 0644 ${UNPACKDIR}/growfs-root.preset \
             ${D}${systemd_unitdir}/system-preset/98-growfs-root.preset
-    install -Dm 0644 ${WORKDIR}/sources/growfs-root.conf \
+    install -Dm 0644 ${UNPACKDIR}/growfs-root.conf \
             ${D}${systemd_unitdir}/system/systemd-growfs-root.service.d/growfs-root.conf
 }