doxygen fixes: fix parameter names to match the functions

The doxygen parameter names in the comments no longer matched the
functions they were attached to.  Doxygen complains about extra
parameter comments and uncommented parameters in the functions.

Change-Id: I21b8a951f8d8d04b07c3779000eeaf1e69fed463
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/8101
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

src/device/device.c

@@ -179,7 +179,7 @@ device_t alloc_find_dev(struct bus *parent, struct device_path *path)
  * Round a number up to an alignment.
  *
  * @param val The starting value.
- * @param roundup Alignment as a power of two.
+ * @param pow Alignment as a power of two.
  * @return Rounded up number.
  */
 static resource_t round(resource_t val, unsigned long pow)