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/rcar3_ulcb_defconfig b/configs/rcar3_ulcb_defconfig
index 8eb703a..a7e3759 100644
--- a/configs/rcar3_ulcb_defconfig
+++ b/configs/rcar3_ulcb_defconfig
@@ -85,6 +85,7 @@
 CONFIG_FLASH_CFI_MTD=y
 CONFIG_SYS_FLASH_PROTECTION=y
 CONFIG_SYS_FLASH_CFI=y
+CONFIG_SYS_FLASH_QUIET_TEST=y
 CONFIG_RENESAS_RPC_HF=y
 CONFIG_SYS_MAX_FLASH_SECT=256
 CONFIG_SYS_MAX_FLASH_BANKS_DETECT=y