external/openxr_includes: Update OpenXR headers to 1.1.51

Part-of: <https://gitlab.freedesktop.org/monado/monado/-/merge_requests/2578>

doc/changes/state_trackers/mr.2578.md

@@ -0,0 +1 @@
+Update OpenXR headers to 1.1.51

src/external/openxr_includes/openxr/openxr.h

@@ -26,7 +26,7 @@ extern "C" {
     ((((major) & 0xffffULL) << 48) | (((minor) & 0xffffULL) << 32) | ((patch) & 0xffffffffULL))
 
 // OpenXR current version number.
-#define XR_CURRENT_API_VERSION XR_MAKE_VERSION(1, 1, 50)
+#define XR_CURRENT_API_VERSION XR_MAKE_VERSION(1, 1, 51)
 
 // OpenXR 1.0 version number
 #define XR_API_VERSION_1_0 XR_MAKE_VERSION(1, 0, XR_VERSION_PATCH(XR_CURRENT_API_VERSION))

src/external/openxr_includes/openxr/openxr_reflection.h

@@ -8095,6 +8095,7 @@ XR_ENUM_STR(XrResult);
     _(CreateVulkanInstanceKHR, KHR_vulkan_enable2) \
     _(CreateVulkanDeviceKHR, KHR_vulkan_enable2) \
     _(GetVulkanGraphicsDevice2KHR, KHR_vulkan_enable2) \
+    _(GetVulkanGraphicsRequirements2KHR, KHR_vulkan_enable2) \
 
 
 /// For every function defined by XR_KHR_extended_struct_name_lengths in this version of the spec,
@@ -8105,6 +8106,14 @@ XR_ENUM_STR(XrResult);
     _(StructureTypeToString2KHR, KHR_extended_struct_name_lengths) \
 
 
+/// For every function defined by XR_KHR_locate_spaces in this version of the spec,
+/// calls your macro with the function name and extension name.
+/// Trims the leading `xr` from the function name and the leading `XR_` from the feature name,
+/// because it is easy to add back but impossible to remove with the preprocessor.
+#define XR_LIST_FUNCTIONS_XR_KHR_locate_spaces(_) \
+    _(LocateSpacesKHR, KHR_locate_spaces) \
+
+
 /// For every function defined by XR_EXT_performance_settings in this version of the spec,
 /// calls your macro with the function name and extension name.
 /// Trims the leading `xr` from the function name and the leading `XR_` from the feature name,

src/external/openxr_includes/openxr/openxr_reflection_parent_structs.h

@@ -368,6 +368,7 @@ This file contains expansion macros (X Macros) for OpenXR structures that have a
     _avail(XrSpatialCapabilityConfigurationMicroQrCodeEXT, XR_TYPE_SPATIAL_CAPABILITY_CONFIGURATION_MICRO_QR_CODE_EXT) \
     _avail(XrSpatialCapabilityConfigurationArucoMarkerEXT, XR_TYPE_SPATIAL_CAPABILITY_CONFIGURATION_ARUCO_MARKER_EXT) \
     _avail(XrSpatialCapabilityConfigurationAprilTagEXT, XR_TYPE_SPATIAL_CAPABILITY_CONFIGURATION_APRIL_TAG_EXT) \
+    _avail(XrSpatialCapabilityConfigurationAnchorEXT, XR_TYPE_SPATIAL_CAPABILITY_CONFIGURATION_ANCHOR_EXT) \