powerpc: Enable thermal monitor feature in defconfig for supported platforms

Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

diff --cc arch/powerpc/configs/corenet32_smp_defconfig
Simple merge

diff --cc arch/powerpc/configs/corenet64_smp_defconfig
Simple merge

diff --cc arch/powerpc/configs/mpc85xx_defconfig
Simple merge

diff --cc arch/powerpc/configs/mpc85xx_smp_defconfig
Simple merge