usb: common: add missing MODULE_DESCRIPTION() macros

usb: common: add missing MODULE_DESCRIPTION() macros

With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/common/usb-common.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/common/usb-otg-fsm.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240611-md-drivers-usb-common-v1-1-f81555b0bd0d@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>