Merge tag 'arc-more-updates-for-2018.11-rc2-2' of git://git.denx.de/u-boot-arc

More fixes and improvements for ARC here:

Fixes (this time included for real):
 * Take care of global uninitialized variables
   They used to be put right after .bss section and were never
   zeroed as they should be. Now merged with normal .bss

Improvements:
 * Print more verbose CPU info for boards built on real silicon
 * Add support for SD-card detection on all ARC boards
 * Quite a few fixes for IoT DK
   - Support reset by command
   - Print of CPU freq on boot
   - Link for eFlash etc

configs/iot_devkit_defconfig

@@ -4,8 +4,9 @@ CONFIG_CPU_ARCEM6=y
 CONFIG_SYS_ICACHE_OFF=y
 CONFIG_SYS_DCACHE_OFF=y
 CONFIG_TARGET_IOT_DEVKIT=y
-CONFIG_SYS_TEXT_BASE=0x20000000
+CONFIG_SYS_TEXT_BASE=0x00000000
 CONFIG_SYS_CLK_FREQ=16000000
+CONFIG_LOCALVERSION="-iotdk-1.0"
 # CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_SYS_PROMPT="IoTDK# "
 # CONFIG_CMD_BOOTD is not set
@@ -17,7 +18,6 @@ CONFIG_SYS_PROMPT="IoTDK# "
 # CONFIG_CMD_LOADS is not set
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
-# CONFIG_CMD_NET is not set
 CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
@@ -25,6 +25,7 @@ CONFIG_DEFAULT_DEVICE_TREE="iot_devkit"
 CONFIG_ENV_IS_IN_FAT=y
 CONFIG_ENV_FAT_INTERFACE="mmc"
 CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+# CONFIG_NET is not set
 CONFIG_DM=y
 CONFIG_MMC=y
 CONFIG_MMC_DW=y