Fix private modules install path

Bug: 220644706
Test: make and find the private modules in dist.
Change-Id: I0a578770492117c16b8bd4c1dfb57b9faeea361e
diff --git a/bifrost/Makefile b/bifrost/Makefile
index aa80e7d..c6bbbaa 100644
--- a/bifrost/Makefile
+++ b/bifrost/Makefile
@@ -39,8 +39,8 @@
 
 modules_install:
 	@$(MAKE) INSTALL_MOD_STRIP=1 M=$(M)/$(GPU_DRV_VERSION)/kernel/drivers/gpu/arm/midgard -C $(KERNEL_SRC) modules_install
-	mkdir -p ${OUT_DIR}/private/modules
-	cd ${OUT_DIR}/$(M)/; find -name "*.ko" -exec cp {} ${OUT_DIR}/private/modules/mali.ko \;
+	mkdir -p ${OUT_DIR}/../private/modules
+	cd ${OUT_DIR}/$(M)/; find -name "*.ko" -exec cp {} ${OUT_DIR}/../private/modules/mali.ko \;
 
 clean:
 	$(MAKE) -C $(KERNEL_SRC) M=$(M)/$(GPU_DRV_VERSION)/kernel/drivers/gpu/arm/midgard clean
diff --git a/utgard/Makefile b/utgard/Makefile
index 6883605..a276846 100644
--- a/utgard/Makefile
+++ b/utgard/Makefile
@@ -38,8 +38,8 @@
 
 modules_install:
 	@$(MAKE) INSTALL_MOD_STRIP=1 M=$(M)/$(GPU_DRV_VERSION) -C $(KERNEL_SRC) modules_install
-	mkdir -p ${OUT_DIR}/private/modules
-	cd ${OUT_DIR}/$(M)/; find -name "*.ko" -exec cp {} ${OUT_DIR}/private/modules/mali.ko \;
+	mkdir -p ${OUT_DIR}/../private/modules
+	cd ${OUT_DIR}/$(M)/; find -name "*.ko" -exec cp {} ${OUT_DIR}/../private/modules/mali.ko \;
 
 clean:
 	$(MAKE) -C $(KERNEL_SRC) M=$(M)/$(GPU_DRV_VERSION) clean