False positive EXPORT_SYMBOL warning with NS variants

[Ian Pilcher]

$ cat foo.c
// SPDX-License-Identifier: GPL-2.0-only
void (*foo)(void);
EXPORT_SYMBOL_NS(foo, FOO);

$ scripts/checkpatch.pl -f foo.c
WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable
#3: FILE: foo.c:3:
+EXPORT_SYMBOL_NS(foo, FOO);

The non-NS EXPORT_SYMBOL variants don't trigger this warning.

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