staging: rtl8192u: Fix alignment to match open parenthesis

This patch fixes the file r8192U_core.c to avoid the checkpatch.pl
warning:
	CHECK: Alignment should match open parenthesis

Signed-off-by: Sumera Priyadarsini <sylphrenadin@gmail.com>
Link: https://lore.kernel.org/r/07a4311b70ed22833a01a9067418639905041cb7.1568814125.git.sylphrenadin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>