drm/msm: adreno: fix build error without debugfs

The newly added a5xx support fails to build when debugfs is diabled:

drivers/gpu/drm/msm/adreno/a5xx_gpu.c:849:4: error: 'struct msm_gpu_funcs' has no member named 'show'
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:849:11: error: 'a5xx_show' undeclared here (not in a function); did you mean 'a5xx_irq'?

This adds a missing #ifdef.

Fixes: b5f103a ("drm/msm: gpu: Add A5XX target support")
Cc: [email protected]
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Rob Clark <[email protected]>

Author: arndb

drivers/gpu/drm/msm/adreno/a5xx_gpu.c

@@ -860,7 +860,9 @@ static const struct adreno_gpu_funcs funcs = {
 		.idle = a5xx_idle,
 		.irq = a5xx_irq,
 		.destroy = a5xx_destroy,
+#ifdef CONFIG_DEBUG_FS
 		.show = a5xx_show,
+#endif
 	},
 	.get_timestamp = a5xx_get_timestamp,
 };