use correct 7in5_v2 reset delay, not the b/c variant

src/epd7in5_v2/mod.rs

@@ -59,7 +59,7 @@ where
         delay: &mut DELAY,
     ) -> Result<(), SPI::Error> {
         // Reset the device
-        self.interface.reset(delay, 4);
+        self.interface.reset(delay, 2);
 
         // V2 procedure as described here:
         // https://github.com/waveshare/e-Paper/blob/master/RaspberryPi%26JetsonNano/python/lib/waveshare_epd/epd7in5bc_V2.py