disk: convert CONFIG_EFI_PARTITION to Kconfig

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
diff --git a/configs/pepper_defconfig b/configs/pepper_defconfig
index 28a3a23..b5e1e03 100644
--- a/configs/pepper_defconfig
+++ b/configs/pepper_defconfig
@@ -35,6 +35,7 @@
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_ISO_PARTITION=y
+CONFIG_EFI_PARTITION=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y