[openwrt/openwrt] ipq40xx: meraki-mr33, meraki-mr74: disable image generation

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/9d64cc068fbb15d9e6498c1eba79851823b2f4f5

commit 9d64cc068fbb15d9e6498c1eba79851823b2f4f5
Author: Lech Perczak <lech.perczak at gmail.com>
AuthorDate: Wed Jun 21 02:30:20 2023 +0200

    ipq40xx: meraki-mr33, meraki-mr74: disable image generation
    
    After migrating to kernel 5.15, upgrading causes the units to become
    soft-bricked, hanging forever at the kernel startup.
    Kernel size limitation of 4000000 bytes is suspected here, but this is
    not fully confirmed.
    
    Disable the images to protect users from inadvertent bricking of units,
    because recovery of those is painful with Cisco's U-boot, until the root
    cause is found and fixed.
    
    Signed-off-by: Lech Perczak <lech.perczak at gmail.com>
---
 target/linux/ipq40xx/image/generic.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/linux/ipq40xx/image/generic.mk b/target/linux/ipq40xx/image/generic.mk
index 59d4f082ff..671fca1682 100644
--- a/target/linux/ipq40xx/image/generic.mk
+++ b/target/linux/ipq40xx/image/generic.mk
@@ -764,6 +764,7 @@ define Device/meraki_mr33
 	BLOCKSIZE := 128k
 	PAGESIZE := 2048
 	DEVICE_PACKAGES := -swconfig ath10k-firmware-qca9887-ct
+	DEFAULT := n
 endef
 TARGET_DEVICES += meraki_mr33
 
@@ -776,6 +777,7 @@ define Device/meraki_mr74
 	PAGESIZE := 2048
 	DEVICE_PACKAGES := -swconfig ath10k-firmware-qca9887-ct
 	DEVICE_DTS_CONFIG := config at 3
+	DEFAULT := n
 endef
 TARGET_DEVICES += meraki_mr74