Profiles: reduce custom part sizes to speed up sysupgrade

profiles

@@ -53,8 +53,8 @@ r4s['packages']="\
 r4s['kopts']="\
 	CONFIG_KERNEL_BTRFS_FS_POSIX_ACL=y \
 	CONFIG_BTRFS_PROGS_ZSTD=y \
-	CONFIG_TARGET_ROOTFS_PARTSIZE=1024 \
-	CONFIG_TARGET_KERNEL_PARTSIZE=128"
+	CONFIG_TARGET_ROOTFS_PARTSIZE=512 \
+	CONFIG_TARGET_KERNEL_PARTSIZE=32"
 r4s['files']="\
 	/mnt/backup"
 
@@ -121,8 +121,8 @@ n5100['packages']="\
 n5100['kopts']="\
 	CONFIG_KERNEL_BTRFS_FS_POSIX_ACL=y \
 	CONFIG_BTRFS_PROGS_ZSTD=y \
-	CONFIG_TARGET_ROOTFS_PARTSIZE=1024 \
-	CONFIG_TARGET_KERNEL_PARTSIZE=128"
+	CONFIG_TARGET_ROOTFS_PARTSIZE=512 \
+	CONFIG_TARGET_KERNEL_PARTSIZE=32"
 n5100['files']="\
 	/mnt/backup"