Fix ubertooth-git build

PKGBUILD.diff

diff --git a/PKGBUILD b/PKGBUILD
index 8cecfb6..a00deea 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -15,11 +15,11 @@ build() {
   cd "${srcdir}/${_gitname}-master/host/"
   mkdir -p build
   cd build
-  cmake -DCMAKE_INSTALL_PREFIX=${pkgdir}/usr ..
+  cmake -DCMAKE_INSTALL_PREFIX=/usr ..
   make
 }
 
 package() {
   cd "${srcdir}/${_gitname}-master/host/build/"
-  make install
+  make DESTDIR="${pkgdir}" install
 }