uniphier: fix code indent for conditional statement

checkpatch.pl from Linux reports tons of coding style errors and
warnings.  I am just fixing under plat/socionext/uniphier/.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

plat/socionext/uniphier/uniphier_nand.c

@@ -108,7 +108,7 @@ static int uniphier_nand_block_isbad(struct uniphier_nand *nand, int block)
 
 	/* if possible, save the result for future re-use */
 	if (block < ARRAY_SIZE(nand->bbt))
-	    nand->bbt[block] = is_bad;
+		nand->bbt[block] = is_bad;
 
 	if (is_bad)
 		WARN("found bad block at %d. skip.\n", block);