boston: Enable CONFIG_DISTRO_DEFAULTS in defconfigs

CONFIG_DISTRO_DEFAULTS selects a number of things we want for Boston
defconfigs & generally describes what we want - to be able to boot an
arbitrary Linux distribution. Enable it in order to shorten the
defconfigs & to automatically keep up with any changes in the choice of
Kconfig symbols selected.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/boston64r2el_defconfig b/configs/boston64r2el_defconfig
index c427d43..10ccc54 100644
--- a/configs/boston64r2el_defconfig
+++ b/configs/boston64r2el_defconfig
@@ -6,11 +6,11 @@
 # CONFIG_MIPS_BOOT_ENV_LEGACY is not set
 CONFIG_MIPS_BOOT_FDT=y
 CONFIG_DEFAULT_DEVICE_TREE="img,boston"
+CONFIG_DISTRO_DEFAULTS=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_BEST_MATCH=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="boston # "
 # CONFIG_CMD_ELF is not set
 # CONFIG_CMD_IMLS is not set
@@ -19,16 +19,11 @@
 # CONFIG_CMD_LOADB is not set
 # CONFIG_CMD_LOADS is not set
 # CONFIG_CMD_FPGA is not set
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_PING=y
 CONFIG_CMD_SNTP=y
 CONFIG_CMD_DNS=y
 CONFIG_CMD_LINK_LOCAL=y
 CONFIG_CMD_TIME=y
-CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
-CONFIG_CMD_FAT=y
-CONFIG_CMD_FS_GENERIC=y
 # CONFIG_DOS_PARTITION is not set
 # CONFIG_ISO_PARTITION is not set
 CONFIG_OF_EMBED=y