spl: Use CONFIG_SPL... instead of CONFIG_..._SPL_...

We like to put the SPL first so it is clear that it relates to SPL. Rename
various malloc-related options which have crept in, to stick to this
convention.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Martyn Welch <martyn.welch@collabora.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/configs/omap4_sdp4430_defconfig b/configs/omap4_sdp4430_defconfig
index 0a8a1c7..5371035 100644
--- a/configs/omap4_sdp4430_defconfig
+++ b/configs/omap4_sdp4430_defconfig
@@ -19,8 +19,8 @@
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_SPL_MAX_SIZE=0xbc00
-CONFIG_SYS_SPL_MALLOC=y
-CONFIG_SYS_SPL_MALLOC_SIZE=0x800000
+CONFIG_SPL_SYS_MALLOC=y
+CONFIG_SPL_SYS_MALLOC_SIZE=0x800000
 # CONFIG_SPL_I2C is not set
 # CONFIG_SPL_NAND_SUPPORT is not set
 CONFIG_SYS_MAXARGS=64