docs: Document FW_PIC compile time option
authorBin Meng <bmeng.cn@gmail.com>
Mon, 12 Jul 2021 00:48:02 +0000 (08:48 +0800)
committerAnup Patel <anup@brainfault.org>
Sat, 17 Jul 2021 12:13:37 +0000 (17:43 +0530)
commit2c74dc3c47f7e77b42735e383292de920273bf97
tree648bf3bccfef4b7f2288a94d29e008d931913835
parenta4555e5698c1fbf5d89a849fbc8c01594401cf0a
docs: Document FW_PIC compile time option

FW_PIC=y is on by default, but the doc is missing when this was
introduced. Add some description for it.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
docs/firmware/fw.md