libs-battery: new Sciaps LIBs battery workaround

This is a driver designed as a workaround to specifically
take input through the sysfs interface in order to control
the android-battery driver.

Signed-off-by: Russell Robinson <rrobinson@phytec.com>
libs-pwr: update function call names

Signed-off-by: Russell Robinson <rrobinson@phytec.com>
ksp5012: update ksp5012 files to use libs-battery

This modifies the board file to implement checking for
libs_pwr and libs_battery drivers, and the defconfig to
enable libs_battery instead of libs_pwr.

Signed-off-by: Russell Robinson <rrobinson@phytec.com>