radv: change base aligmment for allocated memory.

On some CIK (Hawaii) this needs to be at least 64k, I'm not 100% sure
it doesn't need to be 128k.

This was causing fast clear eliminate to overwrite the previous buffer,
which since my gfx init code, was the indirect buffer.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=99692
Tested-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 06ffd299252311f57feac4474551bd5b44d3d4d4)
diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
index 4aa6af2..6f0db31 100644
--- a/src/amd/vulkan/radv_device.c
+++ b/src/amd/vulkan/radv_device.c
@@ -1121,7 +1121,7 @@
 	if (pAllocateInfo->memoryTypeIndex == RADV_MEM_TYPE_GTT_WRITE_COMBINE)
 		flags |= RADEON_FLAG_GTT_WC;
 
-	mem->bo = device->ws->buffer_create(device->ws, alloc_size, 32768,
+	mem->bo = device->ws->buffer_create(device->ws, alloc_size, 65536,
 					       domain, flags);
 
 	if (!mem->bo) {