drm/amdgpu: move misc si headers into amdgpu

Move these to the amdgpu directory to match what we
do for other asics.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/si_ih.c b/drivers/gpu/drm/amd/amdgpu/si_ih.c
index db0f368..81f9080 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/si_ih.c
@@ -23,7 +23,7 @@
 #include "drmP.h"
 #include "amdgpu.h"
 #include "amdgpu_ih.h"
-#include "si/sid.h"
+#include "sid.h"
 #include "si_ih.h"
 
 static void si_ih_set_interrupt_funcs(struct amdgpu_device *adev);