remoteproc: qcom: wcnss_iris: Fix module autoload

If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/remoteproc/qcom_wcnss_iris.ko | grep alias
$

After this patch:

$ modinfo drivers/remoteproc/qcom_wcnss_iris.ko | grep alias
alias:          of:N*T*Cqcom,wcn3680C*
alias:          of:N*T*Cqcom,wcn3680
alias:          of:N*T*Cqcom,wcn3660C*
alias:          of:N*T*Cqcom,wcn3660
alias:          of:N*T*Cqcom,wcn3620C*
alias:          of:N*T*Cqcom,wcn3620

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>