lightnvm: pblk: add tracing for chunk resets

Trace state of chunk resets.

Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/lightnvm/pblk.h

@@ -79,6 +79,12 @@ enum {
 	PBLK_BLK_ST_CLOSED =	0x2,
 };
 
+enum {
+	PBLK_CHUNK_RESET_START,
+	PBLK_CHUNK_RESET_DONE,
+	PBLK_CHUNK_RESET_FAILED,
+};
+
 struct pblk_sec_meta {
 	u64 reserved;
 	__le64 lba;