MIPS,bpf: fix missing break in switch statement

There is a missing break causing a fall-through and setting
ctx.use_bbit_insns to the wrong value. Fix this by adding the
missing break.

Detected with cppcheck:
"Variable 'ctx.use_bbit_insns' is reassigned a value before the old
one has been used. 'break;' missing?"

Fixes: 8d8d18c3 ("MIPS,bpf: Fix using smp_processor_id() in preemptible splat.")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/mips/net/ebpf_jit.c

@@ -1892,6 +1892,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
 	case CPU_CAVIUM_OCTEON2:
 	case CPU_CAVIUM_OCTEON3:
 		ctx.use_bbit_insns = 1;
+		break;
 	default:
 		ctx.use_bbit_insns = 0;
 	}