Unify use of $(hide).

Change-Id: Ib7e17bbb4682caecce5812e63de872b676403d64
diff --git a/core/combo/TARGET_linux-x86.mk b/core/combo/TARGET_linux-x86.mk
index 70a8ba6..c234cf6 100644
--- a/core/combo/TARGET_linux-x86.mk
+++ b/core/combo/TARGET_linux-x86.mk
@@ -117,7 +117,7 @@
 
 TARGET_CUSTOM_LD_COMMAND := true
 define transform-o-to-shared-lib-inner
-$(PRIVATE_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	 -nostdlib -Wl,-soname,$(notdir $@) \
 	 -shared -Bsymbolic \
@@ -138,7 +138,7 @@
 
 
 define transform-o-to-executable-inner
-$(PRIVATE_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(TARGET_GLOBAL_LDFLAGS) \
 	-nostdlib -Bdynamic \
 	-Wl,-dynamic-linker,/system/bin/linker \
@@ -156,7 +156,7 @@
 endef
 
 define transform-o-to-static-executable-inner
-$(PRIVATE_CXX) \
+$(hide) $(PRIVATE_CXX) \
 	$(TARGET_GLOBAL_LDFLAGS) \
 	-nostdlib -Bstatic \
 	-o $@ \