Convert CONFIG_SYS_FLASH_QUIET_TEST to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_FLASH_QUIET_TEST

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/T1024RDB_NAND_defconfig b/configs/T1024RDB_NAND_defconfig
index ddfb9c0..683a114 100644
--- a/configs/T1024RDB_NAND_defconfig
+++ b/configs/T1024RDB_NAND_defconfig
@@ -105,6 +105,7 @@
 CONFIG_SYS_FLASH_EMPTY_INFO=y
 CONFIG_FLASH_CFI_MTD=y
 CONFIG_SYS_FLASH_CFI=y
+CONFIG_SYS_FLASH_QUIET_TEST=y
 CONFIG_SYS_MAX_FLASH_SECT=1024
 CONFIG_MTD_RAW_NAND=y
 CONFIG_NAND_FSL_IFC=y