gpio: Rename dm_gpio_get_dir_flags() to dm_gpio_get_flags()

This function can be used to get any flags, not just direction flags.
Rename it to avoid confusion.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 153312d..4f8d193 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -683,16 +683,16 @@
 int dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags);
 
 /**
- * dm_gpio_get_dir_flags() - Get direction flags
+ * dm_gpio_get_flags() - Get flags
  *
- * read the current direction flags
+ * Read the current flags
  *
  * @desc:	GPIO description containing device, offset and flags,
  *		previously returned by gpio_request_by_name()
  * @flags:	place to put the used flags
  * @return 0 if OK, -ve on error, in which case desc->flags is not updated
  */
-int dm_gpio_get_dir_flags(struct gpio_desc *desc, ulong *flags);
+int dm_gpio_get_flags(struct gpio_desc *desc, ulong *flags);
 
 /**
  * gpio_get_number() - Get the global GPIO number of a GPIO