framework12: Support reading touchpad version

Must already be on firmware 0E06 or higher.

```
> framework_tool --versions
[...]
Touchpad
  IC Type:           0239
  Firmware Version: v0E06
```

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

Author: JohnAZoidberg

framework_lib/src/touchpad.rs

@@ -1,22 +1,30 @@
 use hidapi::{HidApi, HidDevice, HidError};
 
 pub const PIX_VID: u16 = 0x093A;
-pub const PIX_REPORT_ID: u8 = 0x43;
+pub const P274_REPORT_ID: u8 = 0x43;
+pub const P239_REPORT_ID: u8 = 0x42;
 
-fn read_byte(device: &HidDevice, addr: u8) -> Result<u8, HidError> {
-    device.send_feature_report(&[PIX_REPORT_ID, addr, 0x10, 0])?;
+fn read_byte(device: &HidDevice, report_id: u8, addr: u8) -> Result<u8, HidError> {
+    device.send_feature_report(&[report_id, addr, 0x10, 0])?;
 
     let mut buf = [0u8; 4];
-    buf[0] = PIX_REPORT_ID;
+    buf[0] = report_id;
 
     device.get_feature_report(&mut buf)?;
     Ok(buf[3])
 }
 
-fn read_ver(device: &HidDevice) -> Result<u16, HidError> {
+fn read_239_ver(device: &HidDevice) -> Result<u16, HidError> {
     Ok(u16::from_le_bytes([
-        read_byte(device, 0xb2)?,
-        read_byte(device, 0xb3)?,
+        read_byte(device, P239_REPORT_ID, 0x16)?,
+        read_byte(device, P239_REPORT_ID, 0x18)?,
+    ]))
+}
+
+fn read_274_ver(device: &HidDevice) -> Result<u16, HidError> {
+    Ok(u16::from_le_bytes([
+        read_byte(device, P274_REPORT_ID, 0xb2)?,
+        read_byte(device, P274_REPORT_ID, 0xb3)?,
     ]))
 }
 
@@ -50,7 +58,13 @@ pub fn print_touchpad_fw_ver() -> Result<(), HidError> {
 
                 println!("Touchpad");
                 println!("  IC Type:           {:04X}", pid);
-                println!("  Firmware Version: v{:04X}", read_ver(&device)?);
+                let ver = match pid {
+                    0x0239 => format!("{:04X}", read_239_ver(&device)?),
+                    0x0274 => format!("{:04X}", read_274_ver(&device)?),
+                    _ => "Unsupported".to_string(),
+                };
+                println!("  Firmware Version: v{}", ver);
+
                 // If we found one, there's no need to look for more
                 return Ok(());
             }