config/kernel: (many) change CONFIG_DUMMY=y to =m

- having CONFIG_DUMMY=y causes a fake/dummy interface `dummy0` to be
  _always_ present
  - that in turn can confuse things like cloud-init in nocloud-net mode
- changing it to module, it can still be used (just modprobe)
- I found this using `linux-rk35xx-vendor`, but I reason it applies to
  all kernels; most other kernels already have it `=m`

Author: rpardini

config/kernel/linux-rk322x-current.config

@@ -2013,7 +2013,7 @@ CONFIG_NETDEVICES=y
 CONFIG_MII=y
 CONFIG_NET_CORE=y
 CONFIG_BONDING=m
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=m
 # CONFIG_WIREGUARD_DEBUG is not set
 # CONFIG_EQUALIZER is not set

config/kernel/linux-rk322x-edge.config

@@ -2047,7 +2047,7 @@ CONFIG_NETDEVICES=y
 CONFIG_MII=y
 CONFIG_NET_CORE=y
 CONFIG_BONDING=m
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=m
 # CONFIG_WIREGUARD_DEBUG is not set
 # CONFIG_EQUALIZER is not set

config/kernel/linux-rk322x-legacy.config

@@ -1630,7 +1630,7 @@ CONFIG_NETDEVICES=y
 CONFIG_MII=y
 CONFIG_NET_CORE=y
 CONFIG_BONDING=m
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 # CONFIG_EQUALIZER is not set
 # CONFIG_IFB is not set
 # CONFIG_NET_TEAM is not set

config/kernel/linux-rk35xx-vendor.config

@@ -642,7 +642,7 @@ CONFIG_TARGET_CORE=m
 CONFIG_ISCSI_TARGET=m
 CONFIG_NETDEVICES=y
 CONFIG_BONDING=m
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=m
 CONFIG_EQUALIZER=m
 CONFIG_IFB=m

config/kernel/linux-sm8250-current.config

@@ -378,7 +378,7 @@ CONFIG_DM_THIN_PROVISIONING=y
 CONFIG_DM_MIRROR=m
 CONFIG_DM_ZERO=m
 CONFIG_NETDEVICES=y
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=m
 CONFIG_MACVLAN=m
 CONFIG_MACVTAP=m

config/kernel/linux-sm8250-edge.config

@@ -381,7 +381,7 @@ CONFIG_DM_THIN_PROVISIONING=y
 CONFIG_DM_MIRROR=m
 CONFIG_DM_ZERO=m
 CONFIG_NETDEVICES=y
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=m
 CONFIG_MACVLAN=m
 CONFIG_MACVTAP=m

config/kernel/linux-uefi-arm64-cloud.config

@@ -271,7 +271,7 @@ CONFIG_BLK_DEV_DM=y
 CONFIG_DM_MIRROR=y
 CONFIG_DM_ZERO=y
 CONFIG_NETDEVICES=y
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=m
 CONFIG_MACVLAN=m
 CONFIG_IPVLAN=m

config/kernel/linux-uefi-x86-cloud.config

@@ -282,7 +282,7 @@ CONFIG_BLK_DEV_DM=y
 CONFIG_DM_MIRROR=y
 CONFIG_DM_ZERO=y
 CONFIG_NETDEVICES=y
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=y
 CONFIG_MACVLAN=m
 CONFIG_IPVLAN=m

config/kernel/linux-wsl2-arm64-current.config

@@ -399,7 +399,7 @@ CONFIG_DM_VERITY=y
 CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG=y
 CONFIG_NETDEVICES=y
 CONFIG_BONDING=y
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=y
 CONFIG_NET_TEAM=y
 CONFIG_MACVLAN=y

config/kernel/linux-wsl2-arm64-edge.config

@@ -392,7 +392,7 @@ CONFIG_DM_VERITY=y
 CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG=y
 CONFIG_NETDEVICES=y
 CONFIG_BONDING=y
-CONFIG_DUMMY=y
+CONFIG_DUMMY=m
 CONFIG_WIREGUARD=y
 CONFIG_NET_TEAM=y
 CONFIG_MACVLAN=y