gpiolib: fix HAVE_GPIO_LIB leftovers in asm-generic/gpio.h

commit 7444a72effa632fcd8edc566f88 ("gpiolib: allow user-selection")
removed HAVE_GPIO_LIB Kconfig symbol, but the header file still uses the
name [to confuse readers wrt #ifdef/#else/#endif location].

The real Kconfig symbol nowadays is CONFIG_GPIOLIB.

Signed-off-by: Anton Vorontsov <[e-mail]>
Cc: David Brownell <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/asm-generic/gpio.h

···
 
 #endif	/* CONFIG_GPIO_SYSFS */
 
-#else	/* !CONFIG_HAVE_GPIO_LIB */
+#else	/* !CONFIG_GPIOLIB */
 
 static inline int gpio_is_valid(int number)
 {
···
 	gpio_set_value(gpio, value);
 }
 
-#endif /* !CONFIG_HAVE_GPIO_LIB */
+#endif /* !CONFIG_GPIOLIB */
 
 #ifndef CONFIG_GPIO_SYSFS