Rename SPL_CRYPTO_SUPPORT to SPL_CRYPTO

Rename this option so that CONFIG_IS_ENABLED can be used with it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/Makefile b/drivers/Makefile
index 742a547..edff823 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -39,7 +39,7 @@
 obj-$(CONFIG_SPL_BOOTCOUNT_LIMIT) += bootcount/
 obj-$(CONFIG_SPL_CACHE_SUPPORT) += cache/
 obj-$(CONFIG_SPL_CPU) += cpu/
-obj-$(CONFIG_SPL_CRYPTO_SUPPORT) += crypto/
+obj-$(CONFIG_SPL_CRYPTO) += crypto/
 obj-$(CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT) += ddr/fsl/
 obj-$(CONFIG_ARMADA_38X) += ddr/marvell/a38x/
 obj-$(CONFIG_ARMADA_XP) += ddr/marvell/axp/