Add KEYCODE_PROG_{BLUE,RED,GREEN,YELLOW} mappings to LKC equivalents

My goal is to allow colored keys on HDMI-CEC and Bluetooth remotes to be used by an Android TV app.

The USB HID spec [1] and CEC spec [2] both define distinct codes for these keys.

The kernel converts both the HID [4] and CEC [5] codes to standard LKC codes [6]:

  #define KEY_RED		0x18e
  #define KEY_GREEN		0x18f
  #define KEY_YELLOW	0x190
  #define KEY_BLUE		0x191

Android also defines KEYCODE_PROG_ constants for these keys in KeyEvent.java [3]. This commit maps these LKC codes starting at 0x18e (i.e 398) to the existing KeyEvent equivalents.

[1] https://www.usb.org/sites/default/files/color_buttons_0.pdf
[2] https://github.com/floe/CEC/raw/master/extras/CEC_Specs.pdf
[3] https://github.com/aosp-mirror/platform_frameworks_base/blob/master/core/java/android/view/KeyEvent.java#L539-L550
[4] https://github.com/torvalds/linux/blob/master/drivers/hid/hid-input.c#L897-L900
[5] https://github.com/torvalds/linux/blob/master/drivers/media/rc/keymaps/rc-cec.c#L142-L145
[6] https://github.com/torvalds/linux/blob/master/include/uapi/linux/input-event-codes.h#L470-L473



Signed-off-by: Aman Gupta <aman@tmm1.net>
Change-Id: I26c63732c8533390de91460acec312fd27ad8866