input: touch: Raydium: v73.10 code drop

input: touch: Raydium: v73.10 code drop

Bug 200004233

1. Raising service priority to avoid "service busy" issue while
   system fully loading
2. Test_mode function@driver (Change idle escape threshold at runtime)
     Usage:
        a. Disable: echo 0 > /sys/devices/virtual/misc/touch/test_mode
        b. Enable: echo 1 > /sys/devices/virtual/misc/touch/test_mode
        c. Set: echo 2 2 100 > /sys/devices/virtual/misc/touch/test_mode
           (take touch threshold 100 as example)
        d. Check: cat /sys/devices/virtual/misc/touch/test_mode
3. Coding style refine
4. Add mutex_lock/mutex_unlock protection in KRL_CMD_FLUSH_QU command table

Change-Id: Iebfd42c359b510e7102d54c9b8537382c8788242
Signed-off-by: Alex Chen <alchen@nvidia.com>
Reviewed-on: http://git-master/r/432095
Reviewed-by: Jordan Nien <jnien@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Xiaohui Tao <xtao@nvidia.com>
Reviewed-by: Dan Willemsen <dwillemsen@nvidia.com>