drm/panic: remove redundant field when assigning value

Rust allows initializing fields of a struct without specifying the
attribute that is assigned if the variable has the same name. In this
instance this is done for all other attributes of the struct except for
`data`. Clippy notes the redundant field name:

    error: redundant field names in struct initialization
    --> drivers/gpu/drm/drm_panic_qr.rs:495:13
        |
    495 |             data: data,
        |             ^^^^^^^^^^ help: replace it with: `data`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
        = note: `-D clippy::redundant-field-names` implied by `-D warnings`
        = help: to override `-D warnings` add `#[allow(clippy::redundant_field_names)]`

Remove the redundant `data` in the assignment to be consistent.

Fixes: cb5164a ("drm/panic: Add a QR code panic screen")
Reported-by: Miguel Ojeda <ojeda@kernel.org>
Link: #1123
Signed-off-by: Thomas Böhler <witcher@wiredspace.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20241019084048.22336-5-witcher@wiredspace.de
[ Reworded to add Clippy warning like it is done in the rest of the
  series. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Author: Witcher01

drivers/gpu/drm/drm_panic_qr.rs

@@ -489,7 +489,7 @@ impl EncodedMsg<'_> {
         data.fill(0);
 
         let mut em = EncodedMsg {
-            data: data,
+            data,
             ec_size,
             g1_blocks,
             g2_blocks,