ARM: zynq: disable CONFIG_SYS_MALLOC_F to fix MMC boot

Since commit 326a6823 (malloc_f: enable SYS_MALLOC_F by default
if DM is on), Zynq MMC boot hangs up after printing the following:

    U-Boot SPL 2015.04-rc5-00053-gadcc570 (Apr 08 2015 - 12:59:11)
    mmc boot
    reading system.dtb

Prior to commit 326a6823, Zynq boards enabled CONFIG_DM, but
not CONFIG_SYS_MALLOC_F.  That commit forcibly turned on
CONFIG_SYS_MALLOC_F.  I have not figured out the root cause, but
anyway it looks like CONFIG_SYS_MALLOC_F gave a bad impact on the
Zynq MMC boot.

We are planning to have the v2015.04 release in a few days.
I know this is a defensive fixup, but what I can do now is to add
   # CONFIG_SYS_MALLOC_F is not set
to every Zynq defconfig file to get back the original behavior.

Tested on:
  - Zedboard
  - ZC706 board

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Cc: Simon Glass <sjg@chromium.org>

configs/zynq_microzed_defconfig

@@ -3,6 +3,7 @@ CONFIG_ARM=y
 CONFIG_ZYNQ=y
 CONFIG_TARGET_ZYNQ_MICROZED=y
 CONFIG_OF_CONTROL=y
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_SIGNATURE=y

configs/zynq_zc70x_defconfig

@@ -4,6 +4,7 @@ CONFIG_ZYNQ=y
 CONFIG_TARGET_ZYNQ_ZC70X=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc702"
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_SIGNATURE=y

configs/zynq_zc770_xm010_defconfig

@@ -5,6 +5,7 @@ CONFIG_ZYNQ=y
 CONFIG_TARGET_ZYNQ_ZC770=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm010"
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_SIGNATURE=y

configs/zynq_zc770_xm012_defconfig

@@ -5,6 +5,7 @@ CONFIG_ZYNQ=y
 CONFIG_TARGET_ZYNQ_ZC770=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm012"
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_SIGNATURE=y

configs/zynq_zc770_xm013_defconfig

@@ -5,6 +5,7 @@ CONFIG_ZYNQ=y
 CONFIG_TARGET_ZYNQ_ZC770=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm013"
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_SIGNATURE=y

configs/zynq_zed_defconfig

@@ -4,6 +4,7 @@ CONFIG_ZYNQ=y
 CONFIG_TARGET_ZYNQ_ZED=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zed"
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_SIGNATURE=y

configs/zynq_zybo_defconfig

@@ -4,6 +4,7 @@ CONFIG_ZYNQ=y
 CONFIG_TARGET_ZYNQ_ZYBO=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zybo"
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_FIT_SIGNATURE=y