Add install info in service file (close FS#30637)

PKGBUILD

@@ -2,7 +2,7 @@
 
 pkgname=gpm
 pkgver=1.20.6
-pkgrel=8
+pkgrel=9
 pkgdesc="A mouse server for the console and xterm"
 arch=('i686' 'x86_64')
 url="http://www.nico.schottelius.org/software/gpm/"
@@ -17,7 +17,7 @@ sha1sums=('4677da0eb2f1910a5a744bbefa08fea82e0dca0c'
           '19e1feb1493373512a77801699df012d186336ea'
           '4c31cb7dd51cee4d16d3f7a8956e6d87fac1ad86'
           '88fe5ff10916c68a87abc8418a56eb0073f69fa9'
-          '2db35b5f587b8dd21f9943610e7dd70469f888c7')
+          'd2ba8def052225002c1f57280565c97c7bc79eac')
 
 build() {
   cd "${srcdir}/${pkgname}-${pkgver}"