[PATCH] platform/x86: ideapad-laptop: Add Yoga Pro 7 14IAH10 Mode key

[Navon John Lukose <navonjohnlukose@gmail.com>]

The F9 "Mode" key emits WMI fn-key event 0x46, which the keymap does not
cover, so it reaches userspace as KEY_UNKNOWN and cannot be remapped from
there. Under Windows it opens a performance profile chooser, so it belongs
in the keymap as a user-assignable key. Map it to KEY_PROG4.

Signed-off-by: Navon John Lukose <navonjohnlukose@gmail.com>
---
Lenovo Yoga Pro 7 14IAH10 (83KF), BIOS QGCN35WW. No other key on this
machine emits 0x46, and pressing the Mode key leaves platform_profile
unchanged.

KEY_PROG4 per Hans's note on the 0x3d key, that a key opening a settings
dialog under Windows should get a free KEY_PROG#:
https://lore.kernel.org/platform-driver-x86/35969669-48b6-469e-9cd2-26929fb33e5f@redhat.com/

 drivers/platform/x86/lenovo/ideapad-laptop.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/platform/x86/lenovo/ideapad-laptop.c b/drivers/platform/x86/lenovo/ideapad-laptop.c
index 8213524..6fa72a3 100644
--- a/drivers/platform/x86/lenovo/ideapad-laptop.c
+++ b/drivers/platform/x86/lenovo/ideapad-laptop.c
@@ -1360,6 +1360,8 @@ static const struct key_entry ideapad_keymap[] = {
 	{ KE_KEY,	0x45 | IDEAPAD_WMI_KEY, { KEY_PROG3 } },
 	/* Performance toggle also Fn+Q, handled inside ideapad_wmi_notify() */
 	{ KE_KEY,	0x3d | IDEAPAD_WMI_KEY, { KEY_PROG4 } },
+	/* Mode (performance profile chooser) */
+	{ KE_KEY,	0x46 | IDEAPAD_WMI_KEY, { KEY_PROG4 } },
 	/* shift + prtsc */
 	{ KE_KEY,   0x2d | IDEAPAD_WMI_KEY, { KEY_SELECTIVE_SCREENSHOT } },
 	{ KE_KEY,   0x29 | IDEAPAD_WMI_KEY, { KEY_TOUCHPAD_TOGGLE } },

base-commit: 22098763a10d9c13