task-webos-boot: use ${PN} in PACKAGES and RDEPENDS+RRECOMMENDS
task-webos-boot: use ${PN} in PACKAGES and RDEPENDS+RRECOMMENDS

* makes it easier to rename to packagegroup-webos-boot later

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

openwebos/meta-webos,openwebos/meta-webos,Garfonso/meta-webos-ports,nizovn/meta-webos-ports,nizovn/meta-webos-ports,openwebos/meta-webos,openwebos/meta-webos,Garfonso/meta-webos-ports