thermal/debugfs: Allow tze_seq_show() to print statistics for invalid trips

Commit a6258fde8de3 ("thermal/debugfs: Make tze_seq_show() skip invalid
trips and trips with no stats") modified tze_seq_show() to skip invalid
trips, but it overlooked the fact that a trip may become invalid during
a mitigation eposide involving it, in which case its statistics should
still be reported.

For this reason, remove the invalid trip temperature check from the
main loop in tze_seq_show().

The trips that have never been valid will still be skipped after this
change because there are no statistics to report for them.

Fixes: a6258fde8de3 ("thermal/debugfs: Make tze_seq_show() skip invalid trips and trips with no stats")
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/thermal/thermal_debugfs.c

···
 		const struct thermal_trip *trip = &td->trip;
 		struct trip_stats *trip_stats;
 
-		/* Skip invalid trips. */
-		if (trip->temperature == THERMAL_TEMP_INVALID)
-			continue;
-
 		/*
 		 * There is no possible mitigation happening at the
 		 * critical trip point, so the stats will be always