Fix flash_version() leaving SPI mux unlocked, turning LED pink

flash_version() sent EC_CMD_FLASH_NOTIFIED with AccessSpi (0x00) to
unlock the SPI flash but never sent AccessSpiDone (0x03) to restore it.

On hx30 (12th Gen), GPIO_0056 is shared between the SPI flash clock
(function 2) and the right-side green charging LED PWM (function 1).
When AccessSpi is sent, the EC switches GPIO_0056 to SPI mode and
disables the LED driver (GPIO_TYPEC_G_DRV2_EN). Without the matching
AccessSpiDone, the green channel stays dead while red and blue continue
normally, turning the white charging LED pink (R+B without G).

Send AccessSpiDone after reading the version to restore the mux,
matching the pattern used by test_ec_flash_read() and
get_entire_ec_flash().

Signed-off-by: Daniel Schaefer <dhs@frame.work>

Author: JohnAZoidberg

framework_lib/src/chromium_ec/mod.rs

@@ -335,11 +335,20 @@ impl CrosEc {
 
     pub fn flash_version(&self) -> Option<(String, String, EcCurrentImage)> {
         // Unlock SPI
-        // TODO: Lock flash again again
-        let _data = EcRequestFlashNotify { flags: 0 }.send_command(self).ok()?;
+        let _data = EcRequestFlashNotify {
+            flags: MecFlashNotify::AccessSpi as u8,
+        }
+        .send_command(self)
+        .ok()?;
 
         let v = EcRequestGetVersion {}.send_command(self).ok()?;
 
+        // Lock SPI
+        let _ = EcRequestFlashNotify {
+            flags: MecFlashNotify::AccessSpiDone as u8,
+        }
+        .send_command(self);
+
         let curr = match v.current_image {
             1 => EcCurrentImage::RO,
             2 => EcCurrentImage::RW,