oprofile: fix target-install for archs without performance counters support

These archs can still use the timer mode.

Fixes http://autobuild.buildroot.org/results/2627ee17e1f1a58520e01c52af365998f648bbc5/

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/oprofile/oprofile.mk

@@ -30,7 +30,10 @@ OPROFILE_DEPENDENCIES = popt binutils
 define OPROFILE_INSTALL_TARGET_CMDS
 	$(INSTALL) -d -m 755 $(TARGET_DIR)/usr/bin
 	$(INSTALL) -d -m 755 $(TARGET_DIR)/usr/share/oprofile
-	cp -dpfr $(@D)/events/$(OPROFILE_ARCH) $(TARGET_DIR)/usr/share/oprofile
+	if [ -d $(@D)/events/$(OPROFILE_ARCH) ]; then \
+		cp -dpfr $(@D)/events/$(OPROFILE_ARCH) \
+			$(TARGET_DIR)/usr/share/oprofile; \
+	fi
 	$(INSTALL) -m 644 $(@D)/libregex/stl.pat $(TARGET_DIR)/usr/share/oprofile
 	$(INSTALL) -m 755 $(@D)/utils/opcontrol $(TARGET_DIR)/usr/bin
 	$(INSTALL) -m 755 $(addprefix $(@D)/, $(OPROFILE_BINARIES)) $(TARGET_DIR)/usr/bin