forked from Mirrors/opensbi

Let's have FW_PIC enabled by default so that OpenSBI firmware can by default run from any physical address. Tested with qemu_rv32 & rv64, T-HEAD all hardwares. Suggested-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Tested-by: Guo Ren <guoren@linux.alibaba.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>