Fix checksum computation for macOS

The two utilities use different ways to get the size of a file, both of which
don't work on macOS. Replace them with `cat <file> | wc -c`.

Signed-off-by: Christophe de Dinechin <[email protected]>

Author: c3d

bin/add_pgm_chsum

@@ -48,7 +48,7 @@ dumppgm() {
 
 # -- MAIN ------------------
 
-checkutils sha1sum sed tac dd printf find type
+checkutils sha1sum sed tac dd printf find type wc
 
 if [ ! -f "$bin" ]; then
 	echo "ERROR: Cannot find program binary '$bin'"
@@ -60,7 +60,7 @@ if [ -z "$pgm" ]; then
 	exit 1
 fi
 
-pgmsz=`find "$bin" -printf "%s"`
+pgmsz=`cat $bin | wc -c`
 hexsz=`printf "%08x" $pgmsz`
 
 sha=`dumppgm | sha1sum | tr -d ' -'`
@@ -71,5 +71,3 @@ echo "SHA1: $sha"
 	dumppgm
 	toint8 $sha
 ) > $pgm
-
-

bin/check_qspi_crc

@@ -7,7 +7,7 @@ q=build/${pgm}_qspi.bin
 
 
 filesize() {
-	stat -Lc%s "$1"
+	cat "$1" | wc -c
 }