[gnome-games] flatpak: Fix the PCSX installation instructions

[Mathieu Bridon <mbridon src gnome org>]

commit 6d642b53f9b6807ecb8d60c2305215aafddd8e77
Author: Mathieu Bridon <bochecha daitauha fr>
Date:   Tue Apr 25 18:52:03 2017 +0200

    flatpak: Fix the PCSX installation instructions

 .../libretro-cores/pcsx_rearmed-Makefile.install   |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/flatpak/libretro-cores/pcsx_rearmed-Makefile.install 
b/flatpak/libretro-cores/pcsx_rearmed-Makefile.install
index c920c1b..88cfcea 100644
--- a/flatpak/libretro-cores/pcsx_rearmed-Makefile.install
+++ b/flatpak/libretro-cores/pcsx_rearmed-Makefile.install
@@ -1,4 +1,4 @@
 include Makefile.libretro
 
-install:
-       install -p -m755 pcsx_rearmed_libretro.so $(DESTDIR)$(prefix)/lib/libretro
+install: pcsx_rearmed_libretro.so
+       install -Dp -m755 pcsx_rearmed_libretro.so $(DESTDIR)$(prefix)/lib/libretro/pcsx_rearmed_libretro.so