efi_runtime:Copied the structure from userland to stack to derefrence a pointer
when we have structures that contain pointers , we cannot just do double dereference on it as in struct->pointer->value, This will end up as a Page Fault .
To fix this problem ,I changed efi_runtime kernel module to first fetch the entire structure into a local copy on stack and use that to reference the other data members of the struct

Signed-off-by: ASC2-LAB <pradeepdeeps@gmail.com>