Kconfig: Move CONFIG_FIT and related options to Kconfig

There are already two FIT options in Kconfig but the CONFIG options are
still in the header files. We need to do a proper move to fix this.

Move these options to Kconfig and tidy up board configuration:

   CONFIG_FIT
   CONFIG_OF_BOARD_SETUP
   CONFIG_OF_SYSTEM_SETUP
   CONFIG_FIT_SIGNATURE
   CONFIG_FIT_BEST_MATCH
   CONFIG_FIT_VERBOSE
   CONFIG_OF_STDOUT_VIA_ALIAS
   CONFIG_RSA

Unfortunately the first one is a little complicated. We need to make sure
this option is not enabled in SPL by this change. Also this option is
enabled automatically in the host builds by defining CONFIG_FIT in the
image.h file. To solve this, add a new IMAGE_USE_FIT #define which can
be used in files that are built on the host but must also build for U-Boot
and SPL.

Note: Masahiro's moveconfig.py script is amazing.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Add microblaze change, various configs/ re-applies]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/Sinovoip_BPI_M3_defconfig b/configs/Sinovoip_BPI_M3_defconfig
index b96be50..2ff0058 100644
--- a/configs/Sinovoip_BPI_M3_defconfig
+++ b/configs/Sinovoip_BPI_M3_defconfig
@@ -1,15 +1,11 @@
 CONFIG_ARM=y
 CONFIG_ARCH_SUNXI=y
 CONFIG_MACH_SUN8I_A83T=y
+CONFIG_DRAM_TYPE=7
 CONFIG_DRAM_CLK=480
 CONFIG_DRAM_ZQ=15355
 CONFIG_DRAM_ODT_EN=y
-CONFIG_DRAM_TYPE=7
-CONFIG_SYS_EXTRA_OPTIONS=""
-#CONFIG_USB0_VBUS_PIN="AXP0-VBUS-ENABLE"
-#CONFIG_USB0_VBUS_DET="AXP0-VBUS-DETECT"
 CONFIG_AXP_GPIO=y
-#CONFIG_USB_MUSB_HOST=y
 CONFIG_DEFAULT_DEVICE_TREE="sun8i-a83t-sinovoip-bpi-m3"
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL=y
@@ -17,10 +13,6 @@
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
 CONFIG_AXP_DCDC1_VOLT=3000
-CONFIG_AXP_DCDC2_VOLT=900
-CONFIG_AXP_DCDC3_VOLT=900
-CONFIG_AXP_DCDC4_VOLT=0
 CONFIG_AXP_DCDC5_VOLT=1200
 CONFIG_AXP_ALDO2_VOLT=0
 CONFIG_AXP_ALDO3_VOLT=0
-CONFIG_AXP_DLDO4_VOLT=0