spl: fix Makefile for NOR, XIP and YMODEM

During the the conversion to $(SPL_TPL_), the SPL_ fragment was
left over for the NOR, XIP and YMODEM boot methods in SPL, making
these unselectable.

This commit fixes this by dropping the spurious 'SPL_' fragment
from each line.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reported-by: Bo Shen <voice.shen@gmail.com>
Fixes: f94e643 (spl: consistently use $(SPL_TPL_) to select features for SPL and TPL builds)

common/spl/Makefile

@@ -12,9 +12,9 @@ ifdef CONFIG_SPL_BUILD
 obj-$(CONFIG_SPL_FRAMEWORK) += spl.o
 obj-$(CONFIG_$(SPL_TPL_)BOOTROM_SUPPORT) += spl_bootrom.o
 obj-$(CONFIG_$(SPL_TPL_)LOAD_FIT) += spl_fit.o
-obj-$(CONFIG_$(SPL_TPL_)SPL_NOR_SUPPORT) += spl_nor.o
-obj-$(CONFIG_$(SPL_TPL_)SPL_XIP_SUPPORT) += spl_xip.o
-obj-$(CONFIG_$(SPL_TPL_)SPL_YMODEM_SUPPORT) += spl_ymodem.o
+obj-$(CONFIG_$(SPL_TPL_)NOR_SUPPORT) += spl_nor.o
+obj-$(CONFIG_$(SPL_TPL_)XIP_SUPPORT) += spl_xip.o
+obj-$(CONFIG_$(SPL_TPL_)YMODEM_SUPPORT) += spl_ymodem.o
 ifndef CONFIG_SPL_UBI
 obj-$(CONFIG_$(SPL_TPL_)NAND_SUPPORT) += spl_nand.o
 obj-$(CONFIG_$(SPL_TPL_)ONENAND_SUPPORT) += spl_onenand.o