drivers: misc: Makefile: Enable fs_loader compilation at SPL Level

Enable fs_loader compilation at SPL Level.

Signed-off-by: Keerthy <j-keerthy@ti.com>
[Amjad: fix compilation failures for J721e platform]
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
diff --git a/configs/j721e_hs_evm_r5_defconfig b/configs/j721e_hs_evm_r5_defconfig
index 3d2bbb4..1e4a93f 100644
--- a/configs/j721e_hs_evm_r5_defconfig
+++ b/configs/j721e_hs_evm_r5_defconfig
@@ -82,6 +82,7 @@
 CONFIG_DM_MAILBOX=y
 CONFIG_K3_SEC_PROXY=y
 CONFIG_FS_LOADER=y
+CONFIG_SPL_FS_LOADER=y
 CONFIG_K3_AVS0=y
 CONFIG_MMC_SDHCI=y
 CONFIG_SPL_MMC_SDHCI_ADMA=y