drivers/display/lcd160cr.py: In fast_spi, send command before flushing.

The intention of oflush() is to flush the "fast SPI" command itself so that
the SPI object is ready to use when the function returns.

drivers/display/lcd160cr.py

@@ -428,9 +428,9 @@ class LCD160CR:
         self._send(self.buf19)
 
     def fast_spi(self, flush=True):
+        self._send(b'\x02\x12')
         if flush:
             self.oflush()
-        self._send(b'\x02\x12')
         return self.spi
 
     def show_framebuf(self, buf):