panfrost: Rename G52 product ID 0x7402 as G52r1

As pointed out by Robin Murphy, the new product ID belongs
to IP revision "G52r1".

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10921>
3 files changed