arm64: defconfig: enable generic CPU cooling support (CPU_THERMAL)

Enable generic cpu cooling mechanism through CPU frequency reduction,
using thermal-zones and cooling device binding of thermal sensor
to CPU clusters.

Change-Id: I17e18ee860986cb2eca4d21cbbe53ec3c994cdfd
Signed-off-by: Omri Itach <omrii@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/39154
Tested-by: iSoC Platform CI <ykjenk@marvell.com>
Reviewed-by: Hanna Hawa <hannah@marvell.com>
(cherry picked from commit 001e844)
Reviewed-on: http://vgitil04.il.marvell.com:8080/39233

arch/arm64/configs/mvebu_v8_lsp_defconfig

@@ -169,6 +169,7 @@ CONFIG_POWER_RESET_XGENE=y
 CONFIG_POWER_RESET_SYSCON=y
 # CONFIG_HWMON is not set
 CONFIG_THERMAL=y
+CONFIG_CPU_THERMAL=y
 CONFIG_ARMADA_THERMAL=y
 CONFIG_WATCHDOG=y
 CONFIG_ARMADA3700_WATCHDOG=y