arm: kirkwood: nsa310s: Add Distro boot capability

- Add distro boot to board include file and deconfig file
- Miscellaneous changes:
	- Remove Gerald from maintainer list (email bounced)
	- Add CONFIG_SUPPORT_PASSING_ATAGS and friends to support legacy
	kernel method of booting (e.g. OpenWrt) with appended DTB.
	- Add CONFIG_UBIFS_SILENCE_MSG to reduce binary size.

Note that this patch is depended on the following patch:
https://patchwork.ozlabs.org/project/uboot/patch/20220807192709.21717-1-pali@kernel.org/

Signed-off-by: Tony Dinh <mibodhi@gmail.com>
diff --git a/configs/nsa310s_defconfig b/configs/nsa310s_defconfig
index 2b39ae7..a5f01ef 100644
--- a/configs/nsa310s_defconfig
+++ b/configs/nsa310s_defconfig
@@ -4,6 +4,9 @@
 CONFIG_ARCH_CPU_INIT=y
 CONFIG_SYS_THUMB_BUILD=y
 CONFIG_ARCH_KIRKWOOD=y
+CONFIG_SUPPORT_PASSING_ATAGS=y
+CONFIG_CMDLINE_TAG=y
+CONFIG_INITRD_TAG=y
 CONFIG_SYS_KWD_CONFIG="board/zyxel/nsa310s/kwbimage.cfg"
 CONFIG_SYS_TEXT_BASE=0x600000
 CONFIG_SYS_MALLOC_F_LEN=0x400
@@ -14,35 +17,25 @@
 CONFIG_DEFAULT_DEVICE_TREE="kirkwood-nsa310s"
 CONFIG_IDENT_STRING="\nZyXEL NSA310S/320S 1/2-Bay Power Media Server"
 CONFIG_SYS_LOAD_ADDR=0x800000
+CONFIG_DISTRO_DEFAULTS=y
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xc8012000
 CONFIG_BOOTDELAY=3
-CONFIG_USE_BOOTCOMMAND=y
-CONFIG_BOOTCOMMAND="setenv bootargs ${console} ${mtdparts} ${bootargs_root}; ubi part root; ubifsmount ubi:rootfs; ubifsload 0x800000 ${kernel}; ubifsload 0x700000 ${fdt}; ubifsumount; fdt addr 0x700000; fdt resize; fdt chosen; bootz 0x800000 - 0x700000"
 CONFIG_USE_PREBOOT=y
 # CONFIG_DISPLAY_BOARDINFO is not set
-CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="NSA310s> "
 CONFIG_SYS_MAXARGS=32
 CONFIG_SYS_PBSIZE=1050
-CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_NAND=y
 CONFIG_CMD_SATA=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
-CONFIG_CMD_EXT2=y
-CONFIG_CMD_FAT=y
-CONFIG_CMD_FS_GENERIC=y
 CONFIG_CMD_JFFS2=y
 CONFIG_CMD_MTDPARTS=y
 CONFIG_MTDIDS_DEFAULT="nand0=orion_nand"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=orion_nand:0xe0000@0x0(uboot),0x20000@0xe0000(uboot_env),0x100000@0x100000(second_stage_uboot),-@0x200000(root)"
 CONFIG_CMD_UBI=y
-CONFIG_ISO_PARTITION=y
 CONFIG_OF_CONTROL=y
 CONFIG_ENV_OVERWRITE=y
 CONFIG_ENV_IS_IN_NAND=y
@@ -65,6 +58,6 @@
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
-CONFIG_USB_STORAGE=y
+CONFIG_UBIFS_SILENCE_MSG=y
 CONFIG_LZMA=y
 CONFIG_BZIP2=y