intel: Add support for depth/stencil clears via render pass load op

I want to get the demos to stop issuing explicit image clears entirely
before I change their semantics to require being outside the renderpass.

Color clears were already supported -- this just adds plumbing for
depth/stencil.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
diff --git a/icd/intel/cmd_meta.c b/icd/intel/cmd_meta.c
index 28f59fb..4db3308 100644
--- a/icd/intel/cmd_meta.c
+++ b/icd/intel/cmd_meta.c
@@ -940,7 +940,7 @@
     cmd_meta_clear_color_image(cmdBuffer, image, imageLayout, pClearColor, rangeCount, pRanges);
 }
 
-ICD_EXPORT void VKAPI vkCmdClearDepthStencilImage(
+void cmd_meta_clear_depth_stencil_image(
     VkCmdBuffer                              cmdBuffer,
     VkImage                                   image,
     VkImageLayout                            imageLayout,
@@ -976,6 +976,18 @@
     }
 }
 
+ICD_EXPORT void VKAPI vkCmdClearDepthStencilImage(
+    VkCmdBuffer                              cmdBuffer,
+    VkImage                                   image,
+    VkImageLayout                            imageLayout,
+    float                                       depth,
+    uint32_t                                    stencil,
+    uint32_t                                    rangeCount,
+    const VkImageSubresourceRange*          pRanges)
+{
+    cmd_meta_clear_depth_stencil_image(cmdBuffer, image, imageLayout, depth, stencil, rangeCount, pRanges);
+}
+
 ICD_EXPORT void VKAPI vkCmdClearColorAttachment(
     VkCmdBuffer                             cmdBuffer,
     uint32_t                                colorAttachment,