manifest: Add semc devices

This patch combines (for easier merging), the several manifest
changes for SEMC devices. It adds:

7x30 line:
- Smultron (Xperia Mini) [needs to be unprivated]
- Mango (Xperia MiniPro) [needs to be unprivated]
- Urushi (Xperia Ray) [needs to be unprivated]

qsd8k line:
- es209ra (Xperia X10) [needs to be unprivated]

7x27 line:
- Robyn (Xperia X10 Mini)
- Mimmi (Xperia X10 Mini Pro)
- Shakira (Xperia X8)

Vendor-specific changesets can be found here:
http://review.cyanogenmod.com/#change,7811
http://review.cyanogenmod.com/#change,8131
http://review.cyanogenmod.com/#change,7337
http://review.cyanogenmod.com/#change,7335
http://review.cyanogenmod.com/#change,7336
http://review.cyanogenmod.com/#change,8293
http://review.cyanogenmod.com/#change,7229

Change-Id: Ief229e2726f4dfbc99e7521d64fbf02787c370e2