imx6: backport thermal driver

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38229 3c298f89-4303-0410-b956-a3cf2f4a3e73
kernel: add thermal modules

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38230 3c298f89-4303-0410-b956-a3cf2f4a3e73
imx6: enable thermal module by default

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38231 3c298f89-4303-0410-b956-a3cf2f4a3e73
mvebu: enable thermal module by default

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38232 3c298f89-4303-0410-b956-a3cf2f4a3e73
imx6: enable cpufreq-imx6q by default

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38233 3c298f89-4303-0410-b956-a3cf2f4a3e73