obmc-flash-bmc-setenv: Use unescaped instance name

Use the unescaped character in the service file (%I) to be able
to check for the ascii character which is more intuitive. That
way the function in the script can be used by other functions
and just pass the ascii character.

Change-Id: Ie07f33faaccc42eb7fd574fe6d72dac7858c380e
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc b/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc
index c452225..4be7585 100644
--- a/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc
+++ b/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc
@@ -140,8 +140,8 @@
 }
 
 ubi_setenv() {
-    varName="${variable%"\x3d"*}"
-    value="${variable##*"\x3d"}"
+    varName="${variable%=*}"
+    value="${variable##*=}"
     fw_setenv "$varName" "$value"
 }
 
diff --git a/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc-setenv@.service b/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc-setenv@.service
index c26273f..73b55d4 100644
--- a/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc-setenv@.service
+++ b/meta-phosphor/common/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-bmc-setenv@.service
@@ -4,5 +4,5 @@
 [Service]
 Type=oneshot
 RemainAfterExit=no
-ExecStart=/usr/bin/env obmc-flash-bmc ubisetenv %i
+ExecStart=/usr/bin/env obmc-flash-bmc ubisetenv %I
 SyslogIdentifier=obmc-flash-bmc