arch/x86/intel-mid: Use kmemdup rather than duplicating its implementation

The patch was generated using fixed coccinelle semantic patch
scripts/coccinelle/api/memdup.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2014320Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Link: http://lkml.kernel.org/r/1438934377-4922-9-git-send-email-a.hajda@samsung.comSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/platform/intel-mid/sfi.c

@@ -197,10 +197,9 @@ static int __init sfi_parse_gpio(struct sfi_table_header *table)
 	num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry);
 	pentry = (struct sfi_gpio_table_entry *)sb->pentry;
 
-	gpio_table = kmalloc(num * sizeof(*pentry), GFP_KERNEL);
+	gpio_table = kmemdup(pentry, num * sizeof(*pentry), GFP_KERNEL);
 	if (!gpio_table)
 		return -1;
-	memcpy(gpio_table, pentry, num * sizeof(*pentry));
 	gpio_num_entry = num;
 
 	pr_debug("GPIO pin info:\n");