CHROMIUM: arm64: dts: mt8186: Add corsola-squirtle board

Add device tree configuration for project squirtle.

BUG=b:329689835
UPSTREAM-TASK=b:213000788
TEST=emerge-corsola sys-kernel/chromeos-kernel-5_15

Change-Id: I354b38361528843816d56c0f1481dbc5d0b8e866
Signed-off-by: zhouhaikun <zhouhaikun5@huaqin.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/5899209


Reviewed-by: Pin-yen Lin <treapking@chromium.org>
Tested-by: Albert Jakieła <jakiela@google.com>
Commit-Queue: Albert Jakieła <jakiela@google.com>
Tested-by: Jędrzej Ciupis <jciupis@google.com>
Signed-off-by: Hubert Mazur <hmazur@google.com>
Signed-off-by: Tomasz Nowicki <tnowicki@google.com>