bpf: Simplify character output in seq_print_delegate_opts()

Single characters should be put into a sequence.
Thus use the corresponding function “seq_putc” for two selected calls.

This issue was transformed by using the Coccinelle software.
Suggested-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/abde0992-3d71-44d2-ab27-75b382933a22@web.de

kernel/bpf/inode.c

@@ -709,10 +709,10 @@ static void seq_print_delegate_opts(struct seq_file *m,
 			msk = 1ULL << e->val;
 			if (delegate_msk & msk) {
 				/* emit lower-case name without prefix */
-				seq_printf(m, "%c", first ? '=' : ':');
+				seq_putc(m, first ? '=' : ':');
 				name += pfx_len;
 				while (*name) {
-					seq_printf(m, "%c", tolower(*name));
+					seq_putc(m, tolower(*name));
 					name++;
 				}