Revert "i3c: master: svc: use slow speed for first broadcast address"

This reverts commit 07f4c0df which is
commit 20ade67b upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I80e3572f3270106fbf2b0b583d2b9c1ea3117cfe
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>