Fix wrong symlink.

- libGL.so was pointing to itself, breaking the emulator build.

Change-Id: Ia1382238d5f959513f4d272aa68226e955bde462
diff --git a/sysroot/usr/lib/libGL.so b/sysroot/usr/lib/libGL.so
index fc3a03e..e898a5b 120000
--- a/sysroot/usr/lib/libGL.so
+++ b/sysroot/usr/lib/libGL.so
@@ -1 +1 @@
-libGL.so
\ No newline at end of file
+mesa/libGL.so
\ No newline at end of file
diff --git a/sysroot/usr/lib32/libGL.so b/sysroot/usr/lib32/libGL.so
index fc3a03e..e898a5b 120000
--- a/sysroot/usr/lib32/libGL.so
+++ b/sysroot/usr/lib32/libGL.so
@@ -1 +1 @@
-libGL.so
\ No newline at end of file
+mesa/libGL.so
\ No newline at end of file