hw/arm/boot: Use cpu_set_pc() Use cpu_set_pc() across the board for setting program counters. This removes instances of system level code having to reach into the CPU env. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> [AF: Avoid repeated casts with local variables] Signed-off-by: Andreas Färber <afaerber@suse.de>