HID: uhid: convert to hid_safe_input_report()

Commit 0a3fe972a7cb ("HID: core: Mitigate potential OOB by removing
bogus memset()"), added a check in hid_report_raw_event() to reject
reports if the received data size is smaller than expected. This was
intended to prevent OOB errors by no longer allowing zeroing-out of
shorter reports due to the lack of buffer size information.

However, this leads to regressions in hid_report_raw_event(), where
shorter than expected reports are rejected, even though their buffers
are sufficiently large to be zero-padded.

To solve this issue, Benjamin introduced a safer alternative in commit
206342541fc8 ("HID: core: introduce hid_safe_input_report()"), which
forwards the buffer size and allows hid_report_raw_event() to safely
zero-pad the data.

Convert uhid to use hid_safe_input_report() and pass UHID_DATA_MAX as
the buffer size. This prevents the reported regressions [1], allowing
hid core to zero-pad the shorter reports safely as expected.

Cc: stable@vger.kernel.org
Fixes: 0a3fe972a7cb ("HID: core: Mitigate potential OOB by removing bogus memset()")
Closes: https://lore.kernel.org/all/ahsh0UtTX6e0ZeHa@google.com/ [1]
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Lee Jones <lee@kernel.org>
Closes: https://lore.kernel.org/all/ahsh0UtTX6e0ZeHa@google.com/
Signed-off-by: Jiri Kosina <jkosina@suse.com>

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