spl: Convert CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR to Kconfig

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
[trini: Fix sniper and kc1 migration]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/etamin_defconfig b/configs/etamin_defconfig
index 4e5baac..8fb6ebd 100644
--- a/configs/etamin_defconfig
+++ b/configs/etamin_defconfig
@@ -19,6 +19,8 @@
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SPL=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x300
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="U-Boot# "
 CONFIG_AUTOBOOT_KEYED=y