Allow recovery to create device nodes and modify rootfs

tilapia's OTA code for updating the radio image needs to
create files on rootfs and create a character device in /dev.
Allow it.

Bug: 18281224
Change-Id: Ic408c2b28e16a40650f71efe2f17fb0c2e71f97f

Former-commit-id: b5717b8c1f2c5964099744e012264f15772c7d29
Add downloader of proprietary data


Former-commit-id: 7554e765ebb4e990a6466add9dbd4cb63b661cf3 [formerly c1b8452fa8044f2e5ea7d5bda854ed5ea6185c7d]
Former-commit-id: 52ec9c0901f36b777a354cfffd8f56847844d205
Add user to buildtype


Former-commit-id: edcf45f2c6965b363b9d888049fe0b0287869f2d [formerly dcd5d0282b29240d3f4448cd3cf920099dcca718]
Former-commit-id: 214c48bcf8be2bebb2c5e137d81f371a85c0af34
Add makefiles of device/aosp and vendor/aosp


Former-commit-id: 09503fc5abca5d6fc34746c783a6f72f5b991ecc [formerly ff07d19bbdb69174627f7c260ce78644041216c3]
Former-commit-id: 8538d4363bc5aa6f48f95434d8839df48b643096
Change PRODUCT_BRAND and PRODUCT_MODEL for products


Former-commit-id: f6242009a1ba005ee95a24029c796c80a05ecf61 [formerly 8ec1d76f3fd14913257ecd510b9161d81768e100]
Former-commit-id: 9922135a8fb08b6eadbaa4d16fbab139d68783fa
Define PRODUCT_BUILD_PROP_OVERRIDES of Factory Image(Android4.4)


Former-commit-id: 651b3dfd5a0fcb92a9302a06ba7fc982295e6dd8 [formerly fe9a02e62ad5cb6015df62373ced72956451534a]
Former-commit-id: e03db4f10a001b4c0310c748a9f1b88cfe55197f
Add the definition of AOSP build


Former-commit-id: 10ead992b3d1a5b7e91be8ae26498855a81cb336 [formerly f356e1238f9dd77bbb3feb472dc13c54e19365f7]
Former-commit-id: 95c033db0f7fccbcdedbfadd5384d121088d0b84
Update Android 5.0 (LRX21P)


Former-commit-id: eab7773c7122d1ac274541805169bddd3fdea3bf
Merge branch 'aosp-lolli' of github.com:JAOSP/aosp_device_asus_grouper into aosp-lolli


Former-commit-id: d500ad870a3534b924d2988e25a8bbfef25f04a1