init: move from strlcpy with unused retval to strscpy

Follow the advice of the below link and prefer 'strscpy' in this
subsystem.  Conversion is 1:1 because the return value is not used. 
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Link: https://lkml.kernel.org/r/20220818210200.8203-1-wsa+renesas@sang-engineering.com
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
diff --git a/init/main.c b/init/main.c
index 1fe7942..a45f9ec 100644
--- a/init/main.c
+++ b/init/main.c
@@ -422,7 +422,7 @@ static void __init setup_boot_config(void)
 	if (!data)
 		data = xbc_get_embedded_bootconfig(&size);
 
-	strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+	strscpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
 	err = parse_args("bootconfig", tmp_cmdline, NULL, 0, 0, 0, NULL,
 			 bootconfig_params);
 
@@ -762,7 +762,7 @@ void __init parse_early_param(void)
 		return;
 
 	/* All fall through to do_early_param. */
-	strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+	strscpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
 	parse_early_options(tmp_cmdline);
 	done = 1;
 }