Add SPI NOR Flash driver, WIP.

src/drivers/SpiNorFlash.cpp

@@ -0,0 +1,36 @@
+#include <hal/nrf_gpio.h>
+#include <libraries/delay/nrf_delay.h>
+#include <libraries/log/nrf_log.h>
+#include "SpiNorFlash.h"
+#include "Spi.h"
+
+using namespace Pinetime::Drivers;
+
+SpiNorFlash::SpiNorFlash(Spi& spi) : spi{spi} {
+
+}
+
+void SpiNorFlash::Init() {
+  uint8_t cmd = 0x9F;
+  spi.Write(&cmd, 1);
+
+  uint8_t data[3];
+  data[0] = 0;
+  data[1] = 0;
+  data[2] = 0;
+  spi.Read(data, 3);
+
+  NRF_LOG_INFO("Manufacturer : %d, Device : %d", data[0], (data[1] + (data[2]<<8)));
+}
+
+void SpiNorFlash::Uninit() {
+
+}
+
+void SpiNorFlash::Sleep() {
+
+}
+
+void SpiNorFlash::Wakeup() {
+
+}