tu: allow using resolve engine for SRGB MSAA resolves

CTS accepts this behavior since a1be5ce2c893f525da82bc28c6e81b17cacc5d14

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20120>

src/freedreno/vulkan/tu_clear_blit.c

@@ -3038,8 +3038,9 @@ blit_can_resolve(VkFormat format)
 
    /* blit event can only do resolve for simple cases:
     * averaging samples as unsigned integers or choosing only one sample
+    * Note this is allowed for SRGB formats, but results differ from 2D draw resolve
     */
-   if (vk_format_is_snorm(format) || vk_format_is_srgb(format))
+   if (vk_format_is_snorm(format))
       return false;
 
    /* can't do formats with larger channel sizes