staging: rtl8188eu: use break to exit while loop

The variable bContinual in Efuse_PgPacketRead() is only used to break
out of a while loop. Remove the variable and use break instead.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20191220174413.13913-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>