[S] Change in coreboot[main]: payloads/depthcharge: Add default 64-bit libpayload config

[Cliff Huang (Code Review)]

Attention is currently required from: Anil Kumar K, Bora Guvendik, Cliff Huang, Martin L Roth, Wonkyu Kim.

Hello Anil Kumar K, Bora Guvendik, Martin L Roth, Subrata Banik, Wonkyu Kim, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/84107?usp=email

to look at the new patch set (#4).

Change subject: payloads/depthcharge: Add default 64-bit libpayload config
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payloads/depthcharge: Add default 64-bit libpayload config

Add CONFIG_LP_DEFCONFIG_OVERRIDE_X64 flag to select default 64-bit
config file in payloads/libpayload/configs directory.

This is used in standalone environment. The existing libpayload
deconfig file is for boards with 32-bit format and deconfig_64
file is added for 64-bit without adding specific
board.[board name] file in libpayload.

BUG=none
TEST=Build with this new flag and check that the libpayload and
depthcharge.elf are built in 64-bit format.

Signed-off-by: Cliff Huang 
Change-Id: Iac07cf9e3c11e49955c69553407be76ef4f8c060
---
M payloads/external/Makefile.mk
M payloads/external/depthcharge/Kconfig
M payloads/external/depthcharge/Makefile
A payloads/libpayload/configs/defconfig_64
4 files changed, 27 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/07/84107/4