Updated *-p10,pnor,xml package download sites to use SSH URLs

Updated occ-p10, hcode-p10, hostboot-p10, sbe-p10, openpower-pnor, machine XML
to use SSH URLs instead of HTTPS URLs

Signed-off-by: Nick Bofferding <bofferdn@us.ibm.com>
diff --git a/openpower/package/hcode-p10/hcode-p10.mk b/openpower/package/hcode-p10/hcode-p10.mk
index 8d2a43e..db59ad0 100644
--- a/openpower/package/hcode-p10/hcode-p10.mk
+++ b/openpower/package/hcode-p10/hcode-p10.mk
@@ -8,7 +8,7 @@
 HCODE_P10_SITE = $(call github,open-power,hcode,$(HCODE_P10_VERSION))
 # TODO: Need to comment out above line and enable next two lines
 # once buildable P10 HCODE is available in GHE
-#HCODE_P10_SITE = https://github.ibm.com/open-power/hcode.git
+#HCODE_P10_SITE = git@github.ibm.com:open-power/hcode.git
 #HCODE_P10_SITE_METHOD=git
 HCODE_P10_LICENSE = Apache-2.0