[XS] Change in coreboot[main]: 3rdparty: Remove chromeec submodule

[Martin L Roth (Code Review)]

Martin L Roth has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/81024?usp=email )

Change subject: 3rdparty: Remove chromeec submodule
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3rdparty: Remove chromeec submodule

The chromeec submodule is the largest submodule being pulled into the
coreboot tree, at over 400MB. The main branch also contains the majority
of these commits, so restricting it to a single branch still fetches
over 350MB.

Because there is only a single mainboard directory that enables the
build of the chromeec codebase by default, most people are fetching this
repo for no reason.

Based on this, we're going to change the way that the chromeec submodule
is used, fetching it the way we currently fetch external payloads. This
gives us 2 large advantages:
1) Only builds that actually need the chromeec repo will pull it down.
2) Each board that wants to build the chromeec codebase can use a
different commit, unlike submodules which all use the same "current"
commit.

Signed-off-by: Martin Roth 
Change-Id: I357c4c9b506dd3817a308232446144ae889bc220
---
M .gitmodules
D 3rdparty/chromeec
2 files changed, 0 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/24/81024/1

diff --git a/.gitmodules b/.gitmodules
index 5241f58..1738869 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,9 +13,6 @@
 [submodule "arm-trusted-firmware"]
    path = 3rdparty/arm-trusted-firmware
    url = ../arm-trusted-firmware.git
-[submodule "3rdparty/chromeec"]
-	path = 3rdparty/chromeec
-	url = ../chrome-ec.git
 [submodule "libhwbase"]
    path = 3rdparty/libhwbase
    url = ../libhwbase.git
diff --git a/3rdparty/chromeec b/3rdparty/chromeec
deleted file mode 160000
index e486b38..0000000
--- a/3rdparty/chromeec
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit e486b388a73f1e19f3142774d0b3ee166e8f41ff