net/ice/base: move VSI to VSI group

net/ice/base: move VSI to VSI group

Add function to add a VSI to a given VSIG and update package with this
entry. The usual flow in XLT management would iterate through all
characteristics of the input VSI and create a new VSIG and TCAMs till a
matching characteristic is found. When a match is found the VSI is moved
into a matching VSIG and entries are collapsed, leading to added package
update calls. This function serves as an optimization if we know
beforehand that the input VSI has characteristics same as VSI configured
previously added to a VSIG. This is particularly useful for VF VSIs
which are all usually programmed with the same configurations.

Signed-off-by: Vignesh Sridhar <vignesh.sridhar@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>