OMAP3+: voltage: add scalable flag to voltagedomain

Add a 'bool scalable' flag to the struct powerdomain and set it for
the scalable domains on OMAP3 and OMAP4.

Signed-off-by: Kevin Hilman <khilman@ti.com>
diff --git a/arch/arm/mach-omap2/voltagedomains44xx_data.c b/arch/arm/mach-omap2/voltagedomains44xx_data.c
index 245fdf9..95e1ce5 100644
--- a/arch/arm/mach-omap2/voltagedomains44xx_data.c
+++ b/arch/arm/mach-omap2/voltagedomains44xx_data.c
@@ -70,16 +70,19 @@
 
 static struct voltagedomain omap4_voltdm_mpu = {
 	.name = "mpu",
+	.scalable = true,
 	.vdd = &omap4_vdd_mpu_info,
 };
 
 static struct voltagedomain omap4_voltdm_iva = {
 	.name = "iva",
+	.scalable = true,
 	.vdd = &omap4_vdd_iva_info,
 };
 
 static struct voltagedomain omap4_voltdm_core = {
 	.name = "core",
+	.scalable = true,
 	.vdd = &omap4_vdd_core_info,
 };