ARM: BCM: Enable thermal support for NSP SoCs

Change the Northstar Plus Kconfig to select THERMAL and THERMAL_OF,
which allows the ns-thermal driver to be selected via menuconfig.
Signed-off-by: NJon Mason <jon.mason@broadcom.com>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

arch/arm/mach-bcm/Kconfig

@@ -44,6 +44,8 @@ config ARCH_BCM_NSP
 	select ARM_ERRATA_775420
 	select ARM_ERRATA_764369 if SMP
 	select HAVE_SMP
+	select THERMAL
+	select THERMAL_OF
 	help
 	  Support for Broadcom Northstar Plus SoC.
 	  Broadcom Northstar Plus family of SoCs are used for switching control