USB MUX: Search SPI address through anx7447_i2c_addrs_flags array
USB MUX: Search SPI address through anx7447_i2c_addrs_flags array

In order to use anx7447 as a MUX only in Beadrix project, search
corresponding anx7447 SPI address according to specified TCPC address.

BRANCH=main
BUG=b:204882915
TEST=on beadrix, validate daughterboard PD C1 mux ANX3447QN-AC-R and
retimer NB7VPQ904M are working good on C1 Data and C1 Display Port(DP).

Signed-off-by: Teddy Shih <e6db51a5a4ca6ed8f7c3f025addffbe9dc4ffeae@ami.corp-partner.google.com>
Change-Id: Id3800508c52ee1dc0e9d1621ae25828afa115260
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3392106
Reviewed-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec