selftests: kselftest: Add ksft_reset_state()

Add a helper to reset the internal state of the kselftest framework.
It will be used by the selftest harness.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://lore.kernel.org/r/20260302-kselftest-harness-v2-2-3143aa41d989@linutronix.de
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Author: t-8ch

tools/testing/selftests/kselftest.h

@@ -476,4 +476,15 @@ static inline int ksft_min_kernel_version(unsigned int min_major,
 	return major > min_major || (major == min_major && minor >= min_minor);
 }
 
+static inline void ksft_reset_state(void)
+{
+	ksft_cnt.ksft_pass = 0;
+	ksft_cnt.ksft_fail = 0;
+	ksft_cnt.ksft_xfail = 0;
+	ksft_cnt.ksft_xpass = 0;
+	ksft_cnt.ksft_xskip = 0;
+	ksft_cnt.ksft_error = 0;
+	ksft_plan = 0;
+}
+
 #endif /* __KSELFTEST_H */