usb: gadget: f_tcm: Save CPU ID per command

Normally we don't care about the CPU id, but if we ever use
TARGET_SCF_USE_CPUID, then we need to save the cpuid.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/ab45e37314405d9cdd7a8e3b761c654400bb2270.1733876548.git.Thinh.Nguyen@synopsys.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>