add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/testing/selftests/powerpc/syscalls/Makefile
..
..
@@ -1,4 +1,5 @@
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-TEST_GEN_PROGS := ipc_unmuxed
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+# SPDX-License-Identifier: GPL-2.0-only
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+TEST_GEN_PROGS := ipc_unmuxed rtas_filter
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 CFLAGS += -I../../../../../usr/include
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5