libobs: fix building modules once installed

sse-intrin.h is a required header now, but the implicit path
breaks building addons once the headers are installed.

Fix this by making the path explicit.

libobs/graphics/quat.h

@@ -21,7 +21,7 @@
 #include "math-defs.h"
 #include "vec3.h"
 
-#include <util/sse-intrin.h>
+#include "../util/sse-intrin.h"
 
 /*
  * Quaternion math

libobs/graphics/vec3.h

@@ -20,7 +20,7 @@
 #include "math-defs.h"
 #include "vec4.h"
 
-#include <util/sse-intrin.h>
+#include "../util/sse-intrin.h"
 
 #ifdef __cplusplus
 extern "C" {

libobs/graphics/vec4.h

@@ -19,7 +19,7 @@
 
 #include "math-defs.h"
 
-#include <util/sse-intrin.h>
+#include "../util/sse-intrin.h"
 
 #ifdef __cplusplus
 extern "C" {

libobs/media-io/format-conversion.c

@@ -17,7 +17,7 @@
 
 #include "format-conversion.h"
 
-#include <util/sse-intrin.h>
+#include "../util/sse-intrin.h"
 
 /* ...surprisingly, if I don't use a macro to force inlining, it causes the
  * CPU usage to boost by a tremendous amount in debug builds. */

libobs/obs-audio-controls.c

@@ -17,7 +17,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <math.h>
 
-#include <util/sse-intrin.h>
+#include "util/sse-intrin.h"
 
 #include "util/threading.h"
 #include "util/bmem.h"