target/arm: Implement debug_check_breakpoint

Reuse the code at the bottom of helper_check_breakpoints,
which is what we currently call from *_tr_breakpoint_check.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/arm/cpu.c

@@ -1984,6 +1984,7 @@ static const struct TCGCPUOps arm_tcg_ops = {
     .do_unaligned_access = arm_cpu_do_unaligned_access,
     .adjust_watchpoint_address = arm_adjust_watchpoint_address,
     .debug_check_watchpoint = arm_debug_check_watchpoint,
+    .debug_check_breakpoint = arm_debug_check_breakpoint,
 #endif /* !CONFIG_USER_ONLY */
 };
 #endif /* CONFIG_TCG */