spi: lm70llp: add parenthesis for sizeof

Fix missing parenthesis of sizeof reported by checkpatch.pl:
 WARNING: sizeof *pp should be sizeof(*pp).

The kernel coding style suggests thinking of sizeof as a function
and add parenthesis.

Cc: Kaiwan N Billimoria <kaiwan@designergraphix.com>
Signed-off-by: Zhiqi Song <songzhiqi1@huawei.com>
Link: https://lore.kernel.org/r/1621301902-64158-2-git-send-email-songzhiqi1@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-lm70llp.c

@@ -202,7 +202,7 @@ static void spi_lm70llp_attach(struct parport *p)
 	 * the lm70 driver could verify it, reading the manf ID.
 	 */
 
-	master = spi_alloc_master(p->physport->dev, sizeof *pp);
+	master = spi_alloc_master(p->physport->dev, sizeof(*pp));
 	if (!master) {
 		status = -ENOMEM;
 		goto out_fail;