pwm: Fix double shift bug

jira VULN-35725
cve CVE-2023-52756
commit-author Dan Carpenter <dan.carpenter@linaro.org>
commit d27abbf

These enums are passed to set/test_bit().  The set/test_bit() functions
take a bit number instead of a shifted value.  Passing a shifted value
is a double shift bug like doing BIT(BIT(1)).  The double shift bug
doesn't cause a problem here because we are only checking 0 and 1 but
if the value was 5 or above then it can lead to a buffer overflow.

	Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
	Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
	Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
	Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
(cherry picked from commit d27abbf)
	Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>

Author: CIQ Kernel Automation

include/linux/pwm.h

@@ -44,8 +44,8 @@ struct pwm_args {
 };
 
 enum {
-	PWMF_REQUESTED = 1 << 0,
-	PWMF_EXPORTED = 1 << 1,
+	PWMF_REQUESTED = 0,
+	PWMF_EXPORTED = 1,
 };
 
 /*