meta-amd: Use correct syntax to append SRC_URI on override

'SRC_URI:<machine> +=' syntax creates new variable 'SRC_URI:<machine>'.
'SRC_URI:append:<machine> =' syntax appends the variable 'SRC_URI' when
appropriate machine is selected.
hostlogger and obmc-console recipes incorrectly use the first syntax in
places where they should use the second one. This leads to build error,
when bitbake can't find added files.
Correct recipes to fix ethanolx/daytonax boards build.

Change-Id: Ibf424b95ae5aadf4c2ffd5915d746fb19f2a6d66
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
diff --git a/meta-amd/recipes-phosphor/console/obmc-console_%.bbappend b/meta-amd/recipes-phosphor/console/obmc-console_%.bbappend
index 1b0e753..8ffa93b 100644
--- a/meta-amd/recipes-phosphor/console/obmc-console_%.bbappend
+++ b/meta-amd/recipes-phosphor/console/obmc-console_%.bbappend
@@ -3,8 +3,8 @@
 OBMC_CONSOLE_HOST_TTY:daytonax = "ttyVUART0"
 
 SRC_URI:remove = "file://${BPN}.conf"
-SRC_URI:ethanolx += "file://server.ttyS0.conf"
-SRC_URI:daytonax += "file://server.ttyVUART0.conf"
+SRC_URI:append:ethanolx = " file://server.ttyS0.conf"
+SRC_URI:append:daytonax = " file://server.ttyVUART0.conf"
 
 do_install:append() {
         # Remove upstream-provided configuration
diff --git a/meta-amd/recipes-phosphor/logging/phosphor-hostlogger_%.bbappend b/meta-amd/recipes-phosphor/logging/phosphor-hostlogger_%.bbappend
index 372b08d..690ac8a 100644
--- a/meta-amd/recipes-phosphor/logging/phosphor-hostlogger_%.bbappend
+++ b/meta-amd/recipes-phosphor/logging/phosphor-hostlogger_%.bbappend
@@ -5,5 +5,5 @@
 DEFAULT_INSTANCE:daytonax = "ttyVUART0"
 
 SRC_URI:remove = "file://${BPN}.conf"
-SRC_URI:ethanolx += "file://ttyS0.conf"
-SRC_URI:daytonax += "file://ttyVUART0.conf"
+SRC_URI:append:ethanolx = " file://ttyS0.conf"
+SRC_URI:append:daytonax = " file://ttyVUART0.conf"