linux: config: move BBE-specific fragment from meta-agl-core to meta-agl-bsp

linux: config: move BBE-specific fragment from meta-agl-core to meta-agl-bsp

Commit d009fa0c42042a0b7d069779852953621e46469b as part of SPEC-4156 added a
kernel config fragment to disable CONFIG_RELAY. Since this fragment is only
applied to BBE, there's no need for it to reside in meta-agl-core and can be
moved to meta-agl-bsp/meta-sancloud.

Bug-AGL: SPEC-4156
Change-Id: I5da2632d6eb00bbf99ddb48cef861564d2ce868d
Signed-off-by: Denys Dmytriyenko <denys@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/28203
Tested-by: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
(cherry picked from commit 84ff0ab5cb380f1765fc13b2307b525873ad379b)
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/28242
Reviewed-by: Scott Murray <scott.murray@konsulko.com>