MIPS: Remove useless parentheses

Based on the spatch

@@
expression e;
@@
- return (e);
+ return e;

with heavy hand editing because some of the changes are either whitespace
or identation only or result in excessivly long lines.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/rb532/gpio.c b/arch/mips/rb532/gpio.c
index a180076..5aa3df8 100644
--- a/arch/mips/rb532/gpio.c
+++ b/arch/mips/rb532/gpio.c
@@ -79,7 +79,7 @@
  */
 static inline int rb532_get_bit(unsigned offset, void __iomem *ioaddr)
 {
-	return (readl(ioaddr) & (1 << offset));
+	return readl(ioaddr) & (1 << offset);
 }
 
 /*