Add documentation for rounding, scaling, absolute value and 32-bit division
related macros and functions exported by math.h header file.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
---
 Documentation/core-api/kernel-api.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/core-api/kernel-api.rst b/Documentation/core-api/kernel-api.rst
index ae92a2571388..7de494e76fa6 100644
--- a/Documentation/core-api/kernel-api.rst
+++ b/Documentation/core-api/kernel-api.rst
@@ -185,6 +185,12 @@ Division Functions
 .. kernel-doc:: lib/math/gcd.c
    :export:
 
+Rounding, absolute value, division and 32-bit scaling functions
+---------------------------------------------------------------
+
+.. kernel-doc:: include/linux/math.h
+   :internal:
+
 UUID/GUID
 ---------
 
-- 
2.39.1