drm/etnaviv: Drop the <linux/pm_runtime.h> header

Currently, the etnaviv_gem_submit.c isn't call any runtime power management
functions. So drop this unused header, we can include it back when it
really get used though.

Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

Author: suijingfeng

drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c

@@ -6,7 +6,6 @@
 #include <drm/drm_file.h>
 #include <linux/dma-fence-array.h>
 #include <linux/file.h>
-#include <linux/pm_runtime.h>
 #include <linux/dma-resv.h>
 #include <linux/sync_file.h>
 #include <linux/uaccess.h>