tests: drivers: pwm: Revert PWM capture change for pulse check

Reverts a change regarding how the test checks the pulse output
from a capture event. A pulse capture will produce a value that has
the same polarity (and range) as programmed by pwm_capture().
Checking 'pulse_capture' against 'period - pulse' means expecting
the driver to return a capture value that is not inverted as well,
which would cause test cases to fail.

Signed-off-by: Raffael Rostagno <[email protected]>

Author: Raffael Rostagno

tests/drivers/pwm/pwm_loopback/src/test_pwm_loopback.c

@@ -99,12 +99,9 @@ static void test_capture(uint32_t period, uint32_t pulse, enum test_pwm_unit uni
 			       "period capture off by more than 1%");
 	}
 
-	if (flags & PWM_POLARITY_INVERTED) {
-		zassert_within(pulse_capture, period - pulse, (period - pulse) / 100,
-				"pulse capture off by more than 1%");
-	} else {
+	if (flags & PWM_CAPTURE_TYPE_PULSE) {
 		zassert_within(pulse_capture, pulse, pulse / 100,
-				"pulse capture off by more than 1%");
+			       "pulse capture off by more than 1%");
 	}
 }