libhwc2.1: add multi channel histogram support for GS101/GS201

Provide the missing multi channel histogram support when we compile
with the multi channel histogram macro on GS101 and GS201 platforms.

Test: trigger test build, check the log
Bug: 322454133
Change-Id: I949c6ddfb1edd3b15186f2d5902cf1f2f6791623
Signed-off-by: Leo Chen <yinchiuan@google.com>
4 files changed