basic/object/iv: Replace "{Analog -> Integer} Value" (#243)

There are a few instances of "Analog Value" in the comments. Make them
"Integer Value" instead.

src/bacnet/basic/object/iv.c

@@ -96,7 +96,7 @@ void Integer_Value_Property_Lists(
 }
 
 /**
- * Determines if a given Analog Value instance is valid
+ * Determines if a given Integer Value instance is valid
  *
  * @param  object_instance - object-instance number of the object
  *
@@ -115,9 +115,9 @@ bool Integer_Value_Valid_Instance(uint32_t object_instance)
 }
 
 /**
- * Determines the number of Analog Value objects
+ * Determines the number of Integer Value objects
  *
- * @return  Number of Analog Value objects
+ * @return  Number of Integer Value objects
  */
 unsigned Integer_Value_Count(void)
 {
@@ -126,7 +126,7 @@ unsigned Integer_Value_Count(void)
 
 /**
  * Determines the object instance-number for a given 0..N index
- * of Analog Value objects where N is Integer_Value_Count().
+ * of Integer Value objects where N is Integer_Value_Count().
  *
  * @param  index - 0..MAX_INTEGER_VALUES value
  *
@@ -143,7 +143,7 @@ uint32_t Integer_Value_Index_To_Instance(unsigned index)
 
 /**
  * For a given object instance-number, determines a 0..N index
- * of Analog Value objects where N is Integer_Value_Count().
+ * of Integer Value objects where N is Integer_Value_Count().
  *
  * @param  object_instance - object-instance number of the object
  *