platform/x86: ideapad-laptop: map Fn + R key to KEY_REFRESH_RATE_TOGGLE

Newer Lenovo Yogas and Legions with 60Hz/90Hz displays send a wmi event
when Fn + R is pressed. This is intended for use to switch between the
two refresh rates.

The Fn + R key was incorrectly assigned to KEY_DISPLAYTOGGLE because it
is used to toggle the display on and off.

Map Fn + R key to the KEY_REFRESH_RATE_TOGGLE event code.
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/8fd36f0f016dde700396d8afaba1979d5dbc30a1.1710065750.git.soyer@irl.huReviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

drivers/platform/x86/ideapad-laptop.c

@@ -1092,7 +1092,7 @@ static const struct key_entry ideapad_keymap[] = {
 	{ KE_KEY,	0x0e | IDEAPAD_WMI_KEY, { KEY_PICKUP_PHONE } },
 	{ KE_KEY,	0x0f | IDEAPAD_WMI_KEY, { KEY_HANGUP_PHONE } },
 	/* Refresh Rate Toggle (Fn+R) */
-	{ KE_KEY,	0x10 | IDEAPAD_WMI_KEY, { KEY_DISPLAYTOGGLE } },
+	{ KE_KEY,	0x10 | IDEAPAD_WMI_KEY, { KEY_REFRESH_RATE_TOGGLE } },
 	/* Dark mode toggle */
 	{ KE_KEY,	0x13 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
 	/* Sound profile switch */
@@ -1102,7 +1102,7 @@ static const struct key_entry ideapad_keymap[] = {
 	/* Lenovo Support */
 	{ KE_KEY,	0x27 | IDEAPAD_WMI_KEY, { KEY_HELP } },
 	/* Refresh Rate Toggle */
-	{ KE_KEY,	0x0a | IDEAPAD_WMI_KEY, { KEY_DISPLAYTOGGLE } },
+	{ KE_KEY,	0x0a | IDEAPAD_WMI_KEY, { KEY_REFRESH_RATE_TOGGLE } },
 
 	{ KE_END },
 };