[libclc] Fix header inclusion issues

For some reason these weren't picked up by pre-commit CI.

Author: frasercrmck

libclc/clc/include/clc/geometric/clc_cross.h

@@ -9,6 +9,8 @@
 #ifndef __CLC_GEOMETRIC_CLC_CROSS_H__
 #define __CLC_GEOMETRIC_CLC_CROSS_H__
 
+#include <clc/internal/clc.h>
+
 _CLC_OVERLOAD _CLC_DECL float3 __clc_cross(float3 p0, float3 p1);
 _CLC_OVERLOAD _CLC_DECL float4 __clc_cross(float4 p0, float4 p1);
 

libclc/opencl/include/clc/opencl/clc.h

@@ -211,9 +211,10 @@
 #include <clc/opencl/relational/select.h>
 #include <clc/opencl/relational/signbit.h>
 
+#include <clc/opencl/synchronization/cl_mem_fence_flags.h>
+
 /* 6.11.8 Synchronization Functions */
 #include <clc/opencl/synchronization/barrier.h>
-#include <clc/opencl/synchronization/cl_mem_fence_flags.h>
 
 /* 6.11.9 Explicit Memory Fence Functions */
 #include <clc/opencl/explicit_fence/explicit_memory_fence.h>