lib/linear_ranges: fix repeated words & one typo

Change "which which" to "for which" in 3 places.
Change "ranges" to possessive "range's" in 1 place.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/20201221040610.12809-1-rdunlap@infradead.org
Signed-off-by: Mark Brown <broonie@kernel.org>

lib/linear_ranges.c

@@ -128,7 +128,7 @@ EXPORT_SYMBOL_GPL(linear_range_get_value_array);
  * @selector:	address where found selector value is updated
  * @found:	flag to indicate that given value was in the range
  *
- * Return selector which which range value is closest match for given
+ * Return selector for which range value is closest match for given
  * input value. Value is matching if it is equal or smaller than given
  * value. If given value is in the range, then @found is set true.
  *
@@ -168,11 +168,11 @@ EXPORT_SYMBOL_GPL(linear_range_get_selector_low);
  * @selector:	address where found selector value is updated
  * @found:	flag to indicate that given value was in the range
  *
- * Scan array of ranges for selector which which range value matches given
+ * Scan array of ranges for selector for which range value matches given
  * input value. Value is matching if it is equal or smaller than given
  * value. If given value is found to be in a range scanning is stopped and
  * @found is set true. If a range with values smaller than given value is found
- * but the range max is being smaller than given value, then the ranges
+ * but the range max is being smaller than given value, then the range's
  * biggest selector is updated to @selector but scanning ranges is continued
  * and @found is set to false.
  *
@@ -209,7 +209,7 @@ EXPORT_SYMBOL_GPL(linear_range_get_selector_low_array);
  * @selector:	address where found selector value is updated
  * @found:	flag to indicate that given value was in the range
  *
- * Return selector which which range value is closest match for given
+ * Return selector for which range value is closest match for given
  * input value. Value is matching if it is equal or higher than given
  * value. If given value is in the range, then @found is set true.
  *