prom setprop primatives

This patch creates the prom_set_options() and prom_setprop() functions.
These are precise mirrors of their read-only brothers,
prom_get_options() and prom_getprop(), implemented as defined in the
Open Firmware 1275 spec.

The prom_set_options() function will be used to zero out the boot-once
label unconditionally after reading it.

Signed-off-by: Dustin Kirkland <dustin.kirkland@us.ibm.com>
2 files changed