ARM: bL_switcher: add a simple /dev user interface for debugging purposes

Only the basic to aid debugging.

Usage:

	echo <cpuid>,<clusterid> > /dev/b.L_switcher

where <cpuid> is between 0 and 3, and <clusterid> is 0 for the
A15 cluster and 1 for the A7 cluster.

Signed-off-by: nicolas Pitre <nico@linaro.org>
3 files changed