linux-yocto-dev: remove machines already using 3.14

h1940 is the single one left, needs backports

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
linux-yocto_3.14: tosa: really switch to simpler gpio-charger module

Adjust defconfig to match the gpio-charger patch.

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>