net: qrtr: fix endian handling of confirm_rx field

Convert confirm_rx to little endian when enqueueing and convert it back on
receive. This fixes control flow on big endian hosts, little endian is
unaffected.

On transmit, store confirm_rx as __le32 using cpu_to_le32(). On receive,
apply le32_to_cpu() before using the value. !! ensures the value is 0 or 1
in native endianness, so the conversion isn’t strictly required here, but
it is kept for consistency and clarity.

Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Alexander Wilhelm <alexander.wilhelm@westermo.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>