ARM: OMAP2+: Disable omap3 PM init for ti81xx

We cannot use the omap3 pm support on 81xx.

Cc: Brian Hutchinson <b.hutchman@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/io.c

@@ -568,7 +568,6 @@ void __init am35xx_init_late(void)
 void __init ti81xx_init_late(void)
 {
 	omap_common_late_init();
-	omap3_pm_init();
 	omap2_clk_enable_autoidle_all();
 }
 #endif