ARM: OMAP4: Fix PMIC voltage domains for bionic

We are now registering the mpu domain three times instead of registering
mpu, core and iva domains like we should.

Fixes: d44fa15 ("ARM: OMAP2+: Configure voltage controller for cpcap")
Signed-off-by: Tony Lindgren <tony@atomide.com>

Author: tmlind

arch/arm/mach-omap2/pmic-cpcap.c

@@ -246,10 +246,10 @@ int __init omap4_cpcap_init(void)
 	omap_voltage_register_pmic(voltdm, &omap443x_max8952_mpu);
 
 	if (of_machine_is_compatible("motorola,droid-bionic")) {
-		voltdm = voltdm_lookup("mpu");
+		voltdm = voltdm_lookup("core");
 		omap_voltage_register_pmic(voltdm, &omap_cpcap_core);
 
-		voltdm = voltdm_lookup("mpu");
+		voltdm = voltdm_lookup("iva");
 		omap_voltage_register_pmic(voltdm, &omap_cpcap_iva);
 	} else {
 		voltdm = voltdm_lookup("core");