Replace reserved field with version in DTBO header The version filed(currently 0) will be incremented when the dt_table_header struct is updated. Bug: 77706975 Test: ./mkdtboimg_testdata.sh Test: ./mkdtimg_testdata.sh Change-Id: I5c08720132d024437cce40c68cc2c6e937a064fd Merged-In: I5c08720132d024437cce40c68cc2c6e937a064fd (cherry picked from commit 2626d8b9e4d8e8c6cc67ceb1dc4e05a47779785c)