Update SET_COM_PIN_CFG setting logic

Based on micropython/micropython@8680a74

Author: mcauser

adafruit_ssd1306.py

@@ -112,9 +112,7 @@ def init_display(self):
             SET_DISP_OFFSET,
             0x00,
             SET_COM_PIN_CFG,
-            0x02
-            if (self.height == 32 or self.height == 16) and (self.width != 64)
-            else 0x12,
+            0x02 if self.width > 2 * self.height else 0x12,
             # timing and driving scheme
             SET_DISP_CLK_DIV,
             0x80,