test: Filter HW test from prototyped SBS Gauge

Issue #55521 shows hardware tests hanging when run against the Fuel Gauge's
SBS gauge that's still being prototyped against emulated boards.

Prevent accidental running of HW tests on the emulated SBS tests until HW
tests have been contributed upstream by filtering for qemu and native posix
boards.

Signed-off-by: Aaron Massey <aaronmassey@google.com>