tools build: No need to make libapi for perf explicitly

The perf build handles its dependencies by itself.

Also renaming libapi libapikfs to libapi as it got
changed just recently.

Signed-off-by: Jiri Olsa <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Brian Norris <[email protected]>
Cc: David Ahern <[email protected]>
Cc: David Howells <[email protected]>
Cc: Michal Marek <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

tools/Makefile

@@ -47,10 +47,10 @@ cgroup firewire hv guest usb virtio vm net: FORCE
 liblockdep: FORCE
 	$(call descend,lib/lockdep)
 
-libapikfs: FORCE
+libapi: FORCE
 	$(call descend,lib/api)
 
-perf: libapikfs FORCE
+perf: FORCE
 	$(call descend,$@)
 
 selftests: FORCE
@@ -97,10 +97,10 @@ cgroup_clean hv_clean firewire_clean lguest_clean usb_clean virtio_clean vm_clea
 liblockdep_clean:
 	$(call descend,lib/lockdep,clean)
 
-libapikfs_clean:
+libapi_clean:
 	$(call descend,lib/api,clean)
 
-perf_clean: libapikfs_clean
+perf_clean:
 	$(call descend,$(@:_clean=),clean)
 
 selftests_clean: