spear: Use upper case for CONFIG options

There are a few options which use lower case. We should use upper case for
all CONFIG options.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Add usbtty/nand hunk to include/configs/spear3xx_evb.h]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/spear310_usbtty_pnor_defconfig b/configs/spear310_usbtty_pnor_defconfig
index f582b46..3e08fd6 100644
--- a/configs/spear310_usbtty_pnor_defconfig
+++ b/configs/spear310_usbtty_pnor_defconfig
@@ -1,6 +1,6 @@
 CONFIG_ARM=y
 CONFIG_TARGET_SPEAR310=y
-CONFIG_SYS_EXTRA_OPTIONS="spear310,usbtty,FLASH_PNOR"
+CONFIG_SYS_EXTRA_OPTIONS="SPEAR310,USBTTY,FLASH_PNOR"
 CONFIG_BOOTDELAY=-1
 CONFIG_CMD_I2C=y
 # CONFIG_CMD_SETEXPR is not set