refactor(cpus): reorder Cortex-A77 errata by ascending order

Errata report order is enforced to be in ascending order. To achieve
this with the errata framework this has to be done at the definition
level.

Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: Ica348d2c81e204eae2e08e9ccf677807e02efef9
1 file changed