Update functions list in Doxygen

Update functions list in Doxygen

Change-Id: Ic9ccfed8eb3c02eabb65aeea2c09f9636df25e6d
Signed-off-by: morgolock <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4520
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
(cherry picked from commit fbcf65ceab2280d3952beff40c349b3143e08476)
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4166
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Michele Di Giorgio <michele.digiorgio@arm.com>