aio: remove _u16 suffix from call. Make return type a uint16_t

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/aio/aio.c

@@ -99,10 +99,10 @@ maa_aio_context* maa_aio_init(unsigned int aio_channel)
  * maa_aio_init()
  *
  * @returns
- *   16-bit unsigned int representing the current input voltage, normalised to
+ *   unsigned 16 bit int representing the current input voltage, normalised to
  *   a 16-bit value
  */
-unsigned int maa_aio_read_u16(maa_aio_context* dev)
+uint16_t maa_aio_read(maa_aio_context* dev)
 {
     char buffer[16];
     unsigned int analog_value = 0;

src/maa.i

@@ -289,6 +289,6 @@ typedef struct {
   }
   unsigned int read()
   {
-    return maa_aio_read_u16($self);
+    return maa_aio_read($self);
   }
 }