add extra.fstab for PhilZ recovery

Change-Id: I74d3199bdfe7ab26e7a80234211d95a9f25006e2
find7: Use both x9007 and x9076 device tree entries

Change-Id: I622534d0c7d7a1aa5d1eb1255f10e1ed3f1e192a
find7: Set screen density, unique device identifier for Find7 variants

Change-Id: I09cecc54fb2cd415c77e2d1cd75f4975f3208eab
find7: Fix lcd_density for Find7S

Change-Id: Ia3ead447711a91a81a792ea4da76d20d85271c5a