pico: enable vsync and transpose for tufty2350

This needs more wip patches than the basic config

32blit-pico/board/pimoroni_tufty2350/config.h

diff --git a/32blit-pico/board/pimoroni_tufty2350/config.h b/32blit-pico/board/pimoroni_tufty2350/config.h
index fd0fe27..f32fd79 100644
--- a/32blit-pico/board/pimoroni_tufty2350/config.h
+++ b/32blit-pico/board/pimoroni_tufty2350/config.h
@@ -17,9 +17,11 @@
 #define LCD_RD_PIN 31
 #define LCD_MOSI_PIN 32 // DB0
 #define LCD_BACKLIGHT_PIN 26
-// #define LCD_VSYNC_PIN
+#define LCD_VSYNC_PIN 21
 #define LCD_MAX_CLOCK 15000000
 
+#define LCD_TRANSPOSE 1
+
 // there are white LEDs
 
 #define DEFAULT_I2C_CLOCK 400000