libatasmart: fix QA warnings

fix the following warnings:
WARNING: For recipe libatasmart, the following files/directories were installed but not shipped in any package:
WARNING:   /usr/share/vala
WARNING:   /usr/share/vala/vapi
WARNING:   /usr/share/vala/vapi/atasmart.vapi

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

meta-oe/recipes-support/libatasmart/libatasmart_0.17.bb

@@ -2,6 +2,8 @@ DESCRIPTION = "ATA S.M.A.R.T. Reading and Parsing Library"
 LICENSE = "LGPLv2.1"
 LIC_FILES_CHKSUM = "file://LGPL;md5=2d5025d4aa3495befef8f17206a5b0a1"
 
+PR = "r1"
+
 DEPENDS = "udev"
 
 SRCREV = "v${PV}"
@@ -15,3 +17,6 @@ inherit autotools lib_package
 do_install_append() {
 	sed -i -e s://:/:g -e 's:=${libdir}/libudev.la:-ludev:g' ${D}${libdir}/libatasmart.la
 }
+
+PACKAGES =+ "${PN}-dev-vala"
+FILES_${PN}-dev-vala = "${datadir}/vala"