omap3: add missing parentheses

`!' has a higher precedence than `&' so parentheses are required.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/pm34xx.c

@@ -124,8 +124,8 @@ static void omap3_core_save_context(void)
 	control_padconf_off |= START_PADCONF_SAVE;
 	omap_ctrl_writel(control_padconf_off, OMAP343X_CONTROL_PADCONF_OFF);
 	/* wait for the save to complete */
-	while (!omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
-			& PADCONF_SAVE_DONE)
+	while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
+			& PADCONF_SAVE_DONE))
 		;
 	/* Save the Interrupt controller context */
 	omap_intc_save_context();