Reduce reset pulse duration (100ms -> 1ns)

According to the datasheet, reset must stay active (low)
"within a **maximum** time of 100ms" (section 8.1), 1ns seems to work
just fine.

Author: n-eq

src/pcd8544_gpio.rs

@@ -26,7 +26,7 @@ where
         delay: &mut R,
     ) -> Pcd8544Gpio<CLK, DIN, DC, CS> {
         let _ = rst.set_low();
-        delay.delay_ms(10);
+        delay.delay_ns(1);
         let _ = rst.set_high();
 
         let mut pcd = Pcd8544Gpio { clk, din, dc, cs };

src/pcd8544_spi.rs

@@ -24,7 +24,7 @@ where
         delay: &mut R,
     ) -> Pcd8544Spi<SPI, DC, CS> {
         let _ = rst.set_low();
-        delay.delay_ms(10);
+        delay.delay_ns(1);
         let _ = rst.set_high();
 
         let mut pcd = Pcd8544Spi { spi, dc, cs };