anv/gpu_memcpy: Rename the gpu_memcpy function

A GPU memcpy function could alternatively be implemented using MI_*
commands. Provide more detail into how this one operates in case another
memcpy function is created.

v2:
- Update the commit message.
v3:
- Use 'memcpy' instead of 'cpy' (Jason Ekstrand)
- Shorten 'streamout' to 'so'

Suggested-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Nanley Chery <nanley.g.chery@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> (v2)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/vulkan/anv_genX.h

@@ -64,7 +64,7 @@ genX(emit_urb_setup)(struct anv_device *device, struct anv_batch *batch,
                      VkShaderStageFlags active_stages,
                      const unsigned entry_size[4]);
 
-void genX(cmd_buffer_gpu_memcpy)(struct anv_cmd_buffer *cmd_buffer,
+void genX(cmd_buffer_so_memcpy)(struct anv_cmd_buffer *cmd_buffer,
                                 struct anv_bo *dst, uint32_t dst_offset,
                                 struct anv_bo *src, uint32_t src_offset,
                                 uint32_t size);

src/intel/vulkan/genX_cmd_buffer.c

@@ -710,7 +710,7 @@ genX(CmdExecuteCommands)(
          struct anv_state dst_state = secondary->state.render_pass_states;
          assert(src_state.alloc_size == dst_state.alloc_size);
 
-         genX(cmd_buffer_gpu_memcpy)(primary, ss_bo, dst_state.offset,
+         genX(cmd_buffer_so_memcpy)(primary, ss_bo, dst_state.offset,
                                     ss_bo, src_state.offset,
                                     src_state.alloc_size);
       }

src/intel/vulkan/genX_gpu_memcpy.c

@@ -52,7 +52,7 @@ gcd_pow2_u64(uint64_t a, uint64_t b)
 }
 
 void
-genX(cmd_buffer_gpu_memcpy)(struct anv_cmd_buffer *cmd_buffer,
+genX(cmd_buffer_so_memcpy)(struct anv_cmd_buffer *cmd_buffer,
                            struct anv_bo *dst, uint32_t dst_offset,
                            struct anv_bo *src, uint32_t src_offset,
                            uint32_t size)