bpftool: Split FEATURE_TESTS/FEATURE_DISPLAY definitions in Makefile

Make FEATURE_TESTS and FEATURE_DISPLAY easier to read and less likely to
be subject to conflicts on updates by having one feature per line.

Suggested-by: Andres Freund <andres@anarazel.de>
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Tested-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20221025150329.97371-4-quentin@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

tools/bpf/bpftool/Makefile

@@ -93,11 +93,20 @@ INSTALL ?= install
 RM ?= rm -f
 
 FEATURE_USER = .bpftool
-FEATURE_TESTS = libbfd libbfd-liberty libbfd-liberty-z \
-	disassembler-four-args disassembler-init-styled libcap \
-	clang-bpf-co-re
-FEATURE_DISPLAY = libbfd libbfd-liberty libbfd-liberty-z \
-	libcap clang-bpf-co-re
+
+FEATURE_TESTS := clang-bpf-co-re
+FEATURE_TESTS += libcap
+FEATURE_TESTS += libbfd
+FEATURE_TESTS += libbfd-liberty
+FEATURE_TESTS += libbfd-liberty-z
+FEATURE_TESTS += disassembler-four-args
+FEATURE_TESTS += disassembler-init-styled
+
+FEATURE_DISPLAY := clang-bpf-co-re
+FEATURE_DISPLAY += libcap
+FEATURE_DISPLAY += libbfd
+FEATURE_DISPLAY += libbfd-liberty
+FEATURE_DISPLAY += libbfd-liberty-z
 
 check_feat := 1
 NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall