regmap: cache: Fix format specifier in dev_dbg

Fix format specifier in dev_dbg and suppress the following warning

drivers/base/regmap/regcache.c: In function
‘regcache_sync_block_raw_flush’:
drivers/base/regmap/regcache.c:593:2: warning: format ‘%d’ expects
argument of type ‘int’, but argument 4 has type ‘size_t’ [-Wformat]

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 3ae8d9b..75923f2 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -590,7 +590,7 @@
 
 	count = cur - base;
 
-	dev_dbg(map->dev, "Writing %d bytes for %d registers from 0x%x-0x%x\n",
+	dev_dbg(map->dev, "Writing %zu bytes for %d registers from 0x%x-0x%x\n",
 		count * val_bytes, count, base, cur - 1);
 
 	map->cache_bypass = 1;