arch/x86/acpi: Add code for KEY_MENU

Support of MENU key (aka hamburger) for Chromebooks with Vivaldi
keyboard

BUG=b:215038215
TEST=manually tested on Anahera device: pressing T13 key opens menu

Signed-off-by: Boris Mittelberg <bmbm@google.com>
Change-Id: I07873dd9385c743a6512408688ec44a5e97219f9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61835
Reviewed-by: Rajat Jain <rajatja@google.com>
Reviewed-by: Lance Zhao
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/acpi/acpigen_ps2_keybd.c

@@ -55,6 +55,7 @@ static const uint32_t action_keymaps[] = {
 					  KEY_PRIVACY_SCREEN_TOGGLE),
 	[PS2_KEY_MICMUTE] = KEYMAP(0x9b, KEY_MICMUTE),			/* e01b */
 	[PS2_KEY_KBD_BKLIGHT_TOGGLE] = KEYMAP(0x9e, KEY_KBDILLUMTOGGLE),	/* e01e */
+	[PS2_KEY_MENU] = KEYMAP(0xdd, KEY_CONTROLPANEL),	/* e0d5 */
 };
 
 /* Keymap for numeric keypad keys */

src/ec/google/chromeec/ec_acpi.c

@@ -225,6 +225,7 @@ static const enum ps2_action_key ps2_enum_val[] = {
 	[TK_PREV_TRACK] = PS2_KEY_PREV_TRACK,
 	[TK_KBD_BKLIGHT_TOGGLE] = PS2_KEY_KBD_BKLIGHT_TOGGLE,
 	[TK_MICMUTE] = PS2_KEY_MICMUTE,
+	[TK_MENU] = PS2_KEY_MENU,
 };
 
 static void fill_ssdt_ps2_keyboard(const struct device *dev)

src/include/acpi/acpigen_ps2_keybd.h

@@ -26,6 +26,7 @@ enum ps2_action_key {
 	PS2_KEY_PREV_TRACK,
 	PS2_KEY_KBD_BKLIGHT_TOGGLE,
 	PS2_KEY_MICMUTE,
+	PS2_KEY_MENU,
 };
 
 #define PS2_MIN_TOP_ROW_KEYS		10