staging: greybus: remove unnecessary blank line

Remove unnecessary blank line before struct as reported
by checkpatch:

" CHECK: Please don't use multiple blank lines "
Signed-off-by: Menna Mahmoud <eng.mennamahmoud.mm@gmail.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230322113735.31214-1-eng.mennamahmoud.mm@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/greybus/greybus_authentication.h

@@ -41,7 +41,6 @@
 #define CAP_AUTH_RESULT_CR_NO_KEY	0x03
 #define CAP_AUTH_RESULT_CR_SIG_FAIL	0x04
 
-
 /* IOCTL support */
 struct cap_ioc_get_endpoint_uid {
 	__u8			uid[8];

drivers/staging/greybus/pwm.c

@@ -24,7 +24,6 @@ struct gb_pwm_chip {
 #define pwm_chip_to_gb_pwm_chip(chip) \
 	container_of(chip, struct gb_pwm_chip, chip)
 
-
 static int gb_pwm_count_operation(struct gb_pwm_chip *pwmc)
 {
 	struct gb_pwm_count_response response;