ANDROID: Add thermal_debugfs.h to aarch64 allowlist

It was added by commit [1] and is included by thermal_core.h.

[1] commit 755113d7
("thermal/debugfs: Add thermal cooling device debugfs information")

Bug: 375303506
Change-Id: If22b5efca9a70b1beda6fd0b13d1c9be11ca1908
Signed-off-by: Jacky Liu <qsliu@google.com>