drm/panic: Select ZLIB_DEFLATE for DRM_PANIC_SCREEN_QR_CODE

Under `CONFIG_DRM_PANIC_SCREEN_QR_CODE=y`, zlib is used:

    ld.lld: error: undefined symbol: zlib_deflate_workspacesize
    >>> referenced by drm_panic.c
    >>>               drivers/gpu/drm/drm_panic.o:(drm_panic_qr_init) in archive vmlinux.a

Thus select `CONFIG_ZLIB_DEFLATE`.

Fixes: cb5164ac ("drm/panic: Add a QR code panic screen")
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241003230734.653717-1-ojeda@kernel.org