MC_ROLL_P, MC_PITCH_P: increase maximum value to 12

- use the same value for both
- lower control latency allows increasing these gains

src/modules/mc_att_control/mc_att_control_params.c

@@ -74,7 +74,7 @@ PARAM_DEFINE_FLOAT(MC_PITCH_TC, 0.2f);
  *
  * @unit 1/s
  * @min 0.0
- * @max 8
+ * @max 12
  * @decimal 2
  * @increment 0.1
  * @group Multicopter Attitude Control
@@ -149,7 +149,7 @@ PARAM_DEFINE_FLOAT(MC_ROLLRATE_FF, 0.0f);
  *
  * @unit 1/s
  * @min 0.0
- * @max 10
+ * @max 12
  * @decimal 2
  * @increment 0.1
  * @group Multicopter Attitude Control