[source] target: add cpu flags for powerpc64

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/56ed89f0787b9c366e24e360c542bbeebe6e2423

commit 56ed89f0787b9c366e24e360c542bbeebe6e2423
Author: Florian Larysch <fl at n621.de>
AuthorDate: Thu Nov 3 15:54:19 2016 +0100

    target: add cpu flags for powerpc64
    
    Signed-off-by: Florian Larysch <fl at n621.de>
---
 include/target.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/target.mk b/include/target.mk
index c5f6e8b..ef7d855 100644
--- a/include/target.mk
+++ b/include/target.mk
@@ -205,6 +205,10 @@ ifeq ($(DUMP),1)
     CPU_CFLAGS_440:=-mcpu=440
     CPU_CFLAGS_464fp:=-mcpu=464fp
   endif
+  ifeq ($(ARCH),powerpc64)
+    CPU_TYPE ?= powerpc64
+    CPU_CFLAGS_powerpc64:=-mcpu=powerpc64
+  endif
   ifeq ($(ARCH),sparc)
     CPU_TYPE = sparc
     CPU_CFLAGS_ultrasparc = -mcpu=ultrasparc