kuksa-can-provider: fix gateway demo configuration

kuksa-can-provider: fix gateway demo configuration

Fix a couple of missed updates in the CAN provider configuration
for the second CAN interface in the gateway demo setup.

Bug-AGL: SPEC-5396

Change-Id: I12357931d25aff2c5625c874387f7e85d21be438
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/30901
ci-image-boot-test: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
Tested-by: Jenkins Job builder account
(cherry picked from commit 9e0ecec4c6f4dfe37cbfe20dec16ec22687a7c95)
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/30869
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>