Revert "qemumips: use 34Kf-64tlb CPU emulation"
This reverts commit 6a9568401cbf8bed89d1f63dae61a07a83a20b50.
Will be replaced with upstreamed solution instead, that just
bumped number of TLBs to 64 in original 34Kf CPU model.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>