Update the name of the external display

The external display will now take their name from the EDID provided.

The display device config still has precedence over the EDID, so OEMs
can specify the name to be shown in case the external display is part of
the package. If the EDID does not have a valid name, `HDMI Screen` will
continue to be used.

Fix: 413699683
Test: Manual
Test: atest LocalDisplayAdapterTest
Flag: EXEMPT (bug fix)
Change-Id: I05a698810b0b6b963f1aaddf349c17b7b84761e9