board/*/genimage.cfg: use partition-table-type = "gpt"

The gpt = "true" form is deprecated in genimage, use
partition-table-type = "gpt" instead.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

board/octavo/osd32mp1-brk/genimage.cfg

@@ -1,6 +1,6 @@
 image sdcard.img {
 	hdimage {
-		gpt = "true"
+		partition-table-type = "gpt"
 	}
 
 	partition fsbl1 {

board/octavo/osd32mp1-red/genimage.cfg

@@ -1,6 +1,6 @@
 image sdcard.img {
 	hdimage {
-		gpt = "true"
+		partition-table-type = "gpt"
 	}
 
 	partition fsbl1 {

board/olimex/stmp1_olinuxino/genimage.cfg

@@ -1,6 +1,6 @@
 image sdcard.img {
 	hdimage {
-		gpt = "true"
+		partition-table-type = "gpt"
 	}
 
 	partition fsbl1 {

board/seeed/stm32mp157c-odyssey/genimage.cfg

@@ -1,6 +1,6 @@
 image sdcard.img {
 	hdimage {
-		gpt = "true"
+		partition-table-type = "gpt"
 	}
 
 	partition fsbl1 {

board/stmicroelectronics/common/stm32mp157/genimage.cfg.template

@@ -1,6 +1,6 @@
 image sdcard.img {
 	hdimage {
-		gpt = "true"
+		partition-table-type = "gpt"
 	}
 
 	partition fsbl1 {