[PATCH v3] net/ice: support customized search path for DDP package

This patch adds support for customizing firmware search path for DDP package like the kernel behavior, it will read the search path from "/sys/module/firmware_class/parameters/path", and try to load DDP package. Also, updates documentation for loading the DDP package in ice.rst. Signed-off-by: Zh

[PATCH v3] net/ice: support customized search path for DDP package

This patch adds support for customizing firmware search path for DDP package like the kernel behavior, it will read the search path from "/sys/module/firmware_class/parameters/path", and try to load DDP package. Also, updates documentation for loading the DDP package in ice.rst. Signed-off-by: Zh