Rename DRIVERS_MISC_SUPPORT to DRIVERS_MISC

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/doc/README.SPL b/doc/README.SPL
index c6c06f4..ad1ead3 100644
--- a/doc/README.SPL
+++ b/doc/README.SPL
@@ -58,7 +58,7 @@
 CONFIG_SPL_LIBGENERIC_SUPPORT (lib/libgeneric.o)
 CONFIG_SPL_POWER (drivers/power/libpower.o)
 CONFIG_SPL_NAND_SUPPORT (drivers/mtd/nand/raw/libnand.o)
-CONFIG_SPL_DRIVERS_MISC_SUPPORT (drivers/misc)
+CONFIG_SPL_DRIVERS_MISC (drivers/misc)
 CONFIG_SPL_DMA (drivers/dma/libdma.o)
 CONFIG_SPL_POST_MEM_SUPPORT (post/drivers/memory.o)
 CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/raw/nand_spl_load.o)