c/main: Silence warnings and make sure that layer configs are picked up

doc/changes/compositor/mr.620.md

@@ -1 +1,5 @@
+---
+- mr.620
+- mr.624
+---
 Implement support for XR_KHR_composition_layer_equirect (equirect1).

src/xrt/compositor/main/comp_compositor.c

@@ -539,6 +539,12 @@ compositor_layer_commit(struct xrt_compositor *xc, int64_t frame_id)
 			image = &layer->scs[0]->images[eq->sub.image_index];
 			comp_renderer_set_equirect2_layer(c->r, i, image, data);
 		} break;
+#endif
+#ifndef XRT_FEATURE_OPENXR_LAYER_EQUIRECT1
+		case XRT_LAYER_EQUIRECT1:
+#endif
+#ifndef XRT_FEATURE_OPENXR_LAYER_EQUIRECT2
+		case XRT_LAYER_EQUIRECT2:
 #endif
 		case XRT_LAYER_CUBE:
 			// Should never end up here.

src/xrt/compositor/main/comp_compositor.h

@@ -11,6 +11,7 @@
 #pragma once
 
 #include "xrt/xrt_gfx_vk.h"
+#include "xrt/xrt_config_build.h"
 
 #include "util/u_threading.h"
 #include "util/u_index_fifo.h"