pvr: small cleanups

- remove unused PVR_IDF_WDF_IN_REGISTER_CONST_COUNT define
- remove unneeded pvr_compute_ctx forward declaration
- add render context section header to match compute and transfer

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com>
Reviewed-by: Matt Coster <matt.coster@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20931>

src/imagination/vulkan/pvr_cmd_buffer.c

@@ -1164,11 +1164,6 @@ static VkResult pvr_sub_cmd_gfx_job_init(const struct pvr_device_info *dev_info,
    return VK_SUCCESS;
 }
 
-/* Number of shareds used in the Issue Data Fence(IDF)/Wait Data Fence(WDF)
- * kernel.
- */
-#define PVR_IDF_WDF_IN_REGISTER_CONST_COUNT 12U
-
 static void
 pvr_sub_cmd_compute_job_init(const struct pvr_physical_device *pdevice,
                              struct pvr_cmd_buffer *cmd_buffer,

src/imagination/vulkan/pvr_job_context.h

@@ -37,8 +37,6 @@
 struct pvr_reset_cmd {
 };
 
-struct pvr_compute_ctx;
-
 struct rogue_sr_programs {
    struct pvr_bo *store_load_state_bo;
 
@@ -56,6 +54,10 @@ struct rogue_sr_programs {
    } pds;
 };
 
+/******************************************************************************
+   Render context
+ ******************************************************************************/
+
 struct pvr_render_ctx {
    struct pvr_device *device;