Build libcamera from source (3/3)

Change-Id: I44300a37c70668f2991c1cf33e1bed57d2a16ce5
(cherry picked from commit b1e4a18ead321d1015899b1038a4a730897f3536)
Provide prebuilt froyo libcamera.so (TARGET_PREBUILT_LIBCAMERA)

Change-Id: I3dc3d3b0550ac39950d5570724dbe5bb76f49475
(cherry picked from commit b808a1c9dcd18165399734023b99f195ccd5a38c)