meta-google: ipmi: extend the timeout for fru alloc

Fru device can take longer than 60s to come up, this is observed more
often especially in qemu. This extend the timeout to 5 minutes.

Change-Id: I95dcdf2cf10e8f9941ff6502a54e9c67dfc6c7e3
Signed-off-by: Yuxiao Zhang <yuxiaozhang@google.com>
diff --git a/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh b/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
index 29b8e7f..abfffd4 100644
--- a/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
+++ b/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
@@ -120,7 +120,7 @@
     local fdn="${BASH_REMATCH[1]}"
     local start=$SECONDS
     local file
-    while (( SECONDS - start < 60 )); do
+    while (( SECONDS - start < 300 )); do
       local rc=0
       ipmi_fru_device_alloc "$fdn" "$ret" || rc=$?
       (( rc == 0 )) && break