Rename do_printk() to printk()

The indirection seems unnecessary. The macros throw features like
`-Wmisleading-indentation` off, though.

Default build for QEMU/Q35 is unchanged.

Change-Id: Ie4eab935a367b5ad6b38225c4973d41d9f70ef10
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51887
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/console/printk.c

@@ -69,7 +69,7 @@ static void wrap_putchar_cbmemc(unsigned char byte, void *data)
 	__cbmemc_tx_byte(byte);
 }
 
-int do_vprintk(int msg_level, const char *fmt, va_list args)
+int vprintk(int msg_level, const char *fmt, va_list args)
 {
 	int i, log_this;
 
@@ -98,13 +98,13 @@ int do_vprintk(int msg_level, const char *fmt, va_list args)
 	return i;
 }
 
-int do_printk(int msg_level, const char *fmt, ...)
+int printk(int msg_level, const char *fmt, ...)
 {
 	va_list args;
 	int i;
 
 	va_start(args, fmt);
-	i = do_vprintk(msg_level, fmt, args);
+	i = vprintk(msg_level, fmt, args);
 	va_end(args);
 
 	return i;