compositor-*: check for surfaceless_gles2 instead of surfaceless_opengl

All the compositors are using GLES2 so check for the appropriate
surfaceless extension.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
diff --git a/compositor/compositor-wayland.c b/compositor/compositor-wayland.c
index 4f0b025..790fe96 100644
--- a/compositor/compositor-wayland.c
+++ b/compositor/compositor-wayland.c
@@ -129,8 +129,8 @@
 	}
 
 	extensions = eglQueryString(c->base.display, EGL_EXTENSIONS);
-	if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
-		fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
+	if (!strstr(extensions, "EGL_KHR_surfaceless_gles2")) {
+		fprintf(stderr, "EGL_KHR_surfaceless_gles2 not available\n");
 		return -1;
 	}