The only Phil Manzanera solo sheet music I know of is a piano vocal for Flight 19. The arrangement dissapointingly does not include the guitar riff at the start or the solo either.
I also have another book called 'New Wave Guitarists' (or something like that) This book has several pages about Phil's styles and has some transcriptions of some of his guitar playing including solo stuff and some of the Eno stuff.
I intend to put this on to the new version of VivaRoxyMusic.com if I can get permission as the book is now out of print and therefore I will not be doing someone out of a sale.
The book comes with a cassette with the author playing the riffs. There are 10 pages dedicated to Phil Manzanera with notation & tab for passages from : Remote Control, Hot Spot, Numbers, K-Scope, Out Of The Blue, Whirlwind, Still Falls The Rain, Do The Strand, Can't Let Go, Burning Airlines Give You So Much More.
I hope to scan these pages and put them on the new Viva site if the book is deleted and I don't upset any copyright issues.