regmap: i3c: Use ARRAY_SIZE()

Use ARRAY_SIZE() instead of hard coded numbers to show the intention
and make code robust against potential changes.

Signed-off-by: Andy Shevchenko <[e-mail]>
Reviewed-by: Danilo Krummrich <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/base/regmap/regmap-i3c.c

···
 // SPDX-License-Identifier: GPL-2.0
 // Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
 
+#include <linux/array_size.h>
 #include <linux/regmap.h>
 #include <linux/i3c/device.h>
 #include <linux/i3c/master.h>
···
 		},
 	};
 
-	return i3c_device_do_priv_xfers(i3c, xfers, 1);
+	return i3c_device_do_priv_xfers(i3c, xfers, ARRAY_SIZE(xfers));
 }
 
 static int regmap_i3c_read(void *context,
···
 	xfers[1].len = val_size;
 	xfers[1].data.in = val;
 
-	return i3c_device_do_priv_xfers(i3c, xfers, 2);
+	return i3c_device_do_priv_xfers(i3c, xfers, ARRAY_SIZE(xfers));
 }
 
 static const struct regmap_bus regmap_i3c = {