scripts/writesensor: make sensor map definition less cryptic

Use .name = value initialisers when generating the IdInfoMap, so it's
more obvious which members are being initialised.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Change-Id: If6d33883e02790f59e26fb72a1b783e8256aaca9
1 file changed