Revert "Revert "hikey: Switch second ARCH variant from deprecated armv7-a-neon to armv8-a"" am: 0b1d49abda am: c053a00e15 am: 7b2361b2db
am: 2726095bdc

Change-Id: I119a4567cd26b00950717ab823fc0d14debeab9c