manifest: track own external/skia
manifest: track own external/skia

Change-Id: I2ed62657a35cc612d893d7237f9367c15e436701
Signed-off-by: Jonathan Steadman <7ec470bb0ff9c55f8b7e27d5a13d90a6f45e206b@gmail.com>

Hybrid-Power/startsync,see4ri/lolili,pranav01/platform_manifest,ND-3500/platform_manifest,fallouttester/platform_manifest,RR-msm7x30/platform_manifest,knone1/platform_manifest,hagar006/platform_manifest