boot: Change ":rom%d" boot order rom instance to ":rom%x"

Use hex numbers for the rom instance count in boot order open firmware
device naming.  The ":rom" suffix isn't part of a standard and it's
highly unlikely any rom would have 10 or more drives on it, but this
change makes the code more similar to the numbering of other boot
order devices.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
acpi: use specified macro instead of magic-number

Instead of magic numbers, use specified macros for FADT Fixed Feature Flags.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Minor - remove stray tab from src/fw/smm.c.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
build: Update kconfig to version in Linux 3.16.

Update kconfig (from Linux v3.13) to the latest version (Linux v3.16).

This copies kconfig from Linux with only the changes necessary to work
with the SeaBIOS build (the equivalent of the earlier SeaBIOS 0da7bfdf
commit) and the changes necessary to always emit symbols (SeaBIOS
b623e7c5 commit).

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>