HID: nintendo: fix gencon button events map

This fixes the button event map to match the 3-button recommendation
as well as the redundant 'z' in the button map events for the Sega
MD/Gen 6 Button.

Signed-off-by: Ryan McClelland <rymcclel@gmail.com>
Reviewed-by: Daniel J. Ogorchock <djogorchock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

drivers/hid/hid-nintendo.c

@@ -457,13 +457,13 @@ static const struct joycon_ctlr_button_mapping snescon_button_mappings[] = {
 };
 
 static const struct joycon_ctlr_button_mapping gencon_button_mappings[] = {
-	{ BTN_A,	JC_BTN_A,	},
-	{ BTN_B,	JC_BTN_B,	},
-	{ BTN_C,	JC_BTN_R,	},
-	{ BTN_X,	JC_BTN_X,	}, /* MD/GEN 6B Only */
-	{ BTN_Y,	JC_BTN_Y,	}, /* MD/GEN 6B Only */
-	{ BTN_Z,	JC_BTN_L,	}, /* MD/GEN 6B Only */
-	{ BTN_SELECT,	JC_BTN_ZR,	},
+	{ BTN_WEST,	JC_BTN_A,	}, /* A */
+	{ BTN_SOUTH,	JC_BTN_B,	}, /* B */
+	{ BTN_EAST,	JC_BTN_R,	}, /* C */
+	{ BTN_TL,	JC_BTN_X,	}, /* X MD/GEN 6B Only */
+	{ BTN_NORTH,	JC_BTN_Y,	}, /* Y MD/GEN 6B Only */
+	{ BTN_TR,	JC_BTN_L,	}, /* Z MD/GEN 6B Only */
+	{ BTN_SELECT,	JC_BTN_ZR,	}, /* Mode */
 	{ BTN_START,	JC_BTN_PLUS,	},
 	{ BTN_MODE,	JC_BTN_HOME,	},
 	{ BTN_Z,	JC_BTN_CAP,	},