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/configs/rainier_defconfig b/openpower/configs/rainier_defconfig
index b99d3e5..61bb027 100644
--- a/openpower/configs/rainier_defconfig
+++ b/openpower/configs/rainier_defconfig
@@ -48,7 +48,7 @@
 BR2_OPENPOWER_POWER10=y
 BR2_HOSTBOOT_P10_CONFIG_FILE="rainier.config"
 BR2_OPENPOWER_MACHINE_XML_CUSTOM_GIT=y
-BR2_OPENPOWER_MACHINE_XML_CUSTOM_GIT_VALUE="https://github.ibm.com/openbmc/rainier-xml.git"
+BR2_OPENPOWER_MACHINE_XML_CUSTOM_GIT_VALUE="git@github.ibm.com:openbmc/rainier-xml.git"
 BR2_OPENPOWER_MACHINE_XML_VERSION="fe847e5b43f721b8869100a160b423179b047751"
 BR2_OPENPOWER_MACHINE_XML_FILENAME="Rainier-4U-MRW.xml"
 BR2_OPENPOWER_SYSTEM_XML_FILENAME="RAINIER_hb.system.xml"