meta-google: ipmi-fru-sh: Correct checksum calculation
Blocks reads, whos values are greated than 128, will be formated as
negative integers, causing cascading errors in the checksum calculation.
Format using unsigned specifier instead to prevent this.
Tested:
Before:
```
dd if=/sys/bus/i2c/devices/13-0050/eeprom bs=1 count=8 skip=8 | \
hexdump -v -e '1/1 "%d "'
1 1 32 36 -107 47 -115 -121
```
After:
```
dd if=/sys/bus/i2c/devices/13-0050/eeprom bs=1 count=8 skip=8 | \
hexdump -v -e '1/1 "%u "'
1 1 32 36 149 47 141 135
```
Change-Id: I187f0918a25005310bb900022047e03fe68483d4
Signed-off-by: Vlad Sytchenko <vsytch@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 0f6de8f..0ab9b9d 100644
--- a/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
+++ b/meta-google/recipes-google/ipmi/ipmi-fru-sh/lib.sh
@@ -180,7 +180,7 @@
else
echo "Reading $file at $offset for $size" >&2
dd if="$file" bs=1 count="$size" skip="$offset" 2>/dev/null | \
- hexdump -v -e '1/1 "%d "'
+ hexdump -v -e '1/1 "%u "'
fi
}