ppe42-gcc: Host package should depend on host-ppe42-binutils

If host-ppe42-gcc is built against a buildroot version of 2016.11
then the dependency of ppe42-binutils is ignored as it is not
specified as a host dependency.

Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/openpower/package/ppe42-gcc/ppe42-gcc.mk b/openpower/package/ppe42-gcc/ppe42-gcc.mk
index 0a8bc23..ec10e4f 100644
--- a/openpower/package/ppe42-gcc/ppe42-gcc.mk
+++ b/openpower/package/ppe42-gcc/ppe42-gcc.mk
@@ -9,6 +9,7 @@
 PPE42_GCC_LICENSE = GPLv3+
 
 PPE42_GCC_DEPENDENCIES = ppe42-binutils
+HOST_PPE42_GCC_DEPENDENCIES = host-ppe42-binutils
 
 PPE42_GCC_DIR = $(STAGING_DIR)/ppe42-binutils
 PPE42_GCC_BIN = $(STAGING_DIR)/ppe42-binutils/linux