target/m68k: Add trailing '\n' to qemu_log() call

Signed-off-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-id: 20180606152128.449-10-f4bug@amsat.org
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target/m68k/translate.c

@@ -1556,7 +1556,7 @@ DISAS_INSN(undef)
     /* ??? This is both instructions that are as yet unimplemented
        for the 680x0 series, as well as those that are implemented
        but actually illegal for CPU32 or pre-68020.  */
-    qemu_log_mask(LOG_UNIMP, "Illegal instruction: %04x @ %08x",
+    qemu_log_mask(LOG_UNIMP, "Illegal instruction: %04x @ %08x\n",
                   insn, s->insn_pc);
     gen_exception(s, s->insn_pc, EXCP_UNSUPPORTED);
 }