Change helix:yshrsmz keymap to use split_common (#16537)

keyboards/helix/rev2/keymaps/yshrsmz/rules.mk

@@ -6,6 +6,7 @@
 #   See TOP/docs/config_options.md for more information.
 #
 LTO_ENABLE = no  # if firmware size over limit, try this option
+SPLIT_KEYBOARD = yes
 
 # Helix Spacific Build Options
 # you can uncomment and edit follows 7 Variables
@@ -17,3 +18,11 @@ OLED_ENABLE = yes            # OLED_ENABLE
 # LED_UNDERGLOW_ENABLE = no   # LED underglow (Enable WS2812 RGB underlight.)
 LED_ANIMATIONS = no        # LED animations
 # IOS_DEVICE_ENABLE = no      # connect to IOS device (iPad,iPhone)
+
+# OLED_ENABLE が yes のとき
+#   OLED_SELECT が core ならば QMK 標準の oled_dirver.c を使用します。
+#   OLED_SELECT が core 以外ならば従来どおり helix/local_drivers/ssd1306.c を使用します。
+# If OLED_ENABLE is 'yes'
+#   If OLED_SELECT is 'core', use QMK standard oled_dirver.c.
+#   If OLED_SELECT is other than 'core', use helix/local_drivers/ssd1306.c.
+OLED_SELECT = core