boards/qemu-armv7a: revise nsh config

This revises qemu-armv7a:nsh sample config with the following changes:

- reduced memory size so that `-m 1024` is optional
- enables graceful shutdown from within NuttX
- enables more cases in `ostest`.

Signed-off-by: Yanfeng Liu <p-liuyanfeng9@xiaomi.com>

boards/arm/qemu/qemu-armv7a/configs/nsh/defconfig

@@ -6,6 +6,7 @@
 # modifications.
 #
 CONFIG_ALARM_ARCH=y
+CONFIG_ALLSYMS=y
 CONFIG_ARCH="arm"
 CONFIG_ARCH_BOARD="qemu-armv7a"
 CONFIG_ARCH_BOARD_QEMU_ARMV7A=y
@@ -14,42 +15,42 @@ CONFIG_ARCH_CHIP_QEMU_ARM=y
 CONFIG_ARCH_CHIP_QEMU_CORTEXA7=y
 CONFIG_ARCH_INTERRUPTSTACK=2048
 CONFIG_ARCH_LOWVECTORS=y
+CONFIG_ARM_PSCI=y
+CONFIG_ARM_SEMIHOSTING_HOSTFS=y
+CONFIG_BOARDCTL_POWEROFF=y
 CONFIG_BUILTIN=y
 CONFIG_DEBUG_ASSERTIONS=y
 CONFIG_DEBUG_FEATURES=y
 CONFIG_DEBUG_FULLOPT=y
-CONFIG_DEBUG_SCHED=y
-CONFIG_DEBUG_SCHED_ERROR=y
-CONFIG_DEBUG_SCHED_INFO=y
-CONFIG_DEBUG_SCHED_WARN=y
 CONFIG_DEBUG_SYMBOLS=y
 CONFIG_DEFAULT_TASK_STACKSIZE=4096
 CONFIG_EXAMPLES_HELLO=y
 CONFIG_EXPERIMENTAL=y
-CONFIG_FLASH_SIZE=127926272
-CONFIG_FLASH_START=0x00600000
-CONFIG_FLASH_VSTART=0x00600000
+CONFIG_FLASH_SIZE=1048576
+CONFIG_FLASH_START=0
+CONFIG_FLASH_VSTART=0
+CONFIG_FS_HOSTFS=y
 CONFIG_FS_PROCFS=y
-CONFIG_FS_ROMFS=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_IDLETHREAD_STACKSIZE=4096
 CONFIG_INIT_ENTRYPOINT="nsh_main"
-CONFIG_INTELHEX_BINARY=y
-CONFIG_LIBC_EXECFUNCS=y
+CONFIG_MODULE=y
 CONFIG_NSH_ARCHINIT=y
 CONFIG_NSH_BUILTIN_APPS=y
 CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_READLINE=y
 CONFIG_ONESHOT=y
 CONFIG_PREALLOC_TIMERS=4
+CONFIG_PRIORITY_INHERITANCE=y
 CONFIG_RAMLOG=y
-CONFIG_RAM_SIZE=132120576
-CONFIG_RAM_START=0x40200000
-CONFIG_RAM_VSTART=0x40200000
+CONFIG_RAM_SIZE=16777216
+CONFIG_RAM_START=0x40000000
+CONFIG_RAM_VSTART=0x40000000
 CONFIG_RAW_BINARY=y
 CONFIG_READLINE_CMD_HISTORY=y
 CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_HAVE_PARENT=y
 CONFIG_SCHED_HPWORK=y
 CONFIG_SCHED_HPWORKPRIORITY=192
 CONFIG_STACK_COLORATION=y