mx7_common: Fix SPL compilation with secure boot support enabled

The SPL MISC driver support must be enabled, so that the driver can use OTP fuse
to check if HAB is enabled.

Signed-off-by: Eran Matityahu <eran.m@variscite.com>

include/configs/mx7_common.h

@@ -59,6 +59,9 @@
 /* Secure boot (HAB) support */
 #ifdef CONFIG_SECURE_BOOT
 #define CONFIG_CSF_SIZE			0x2000
+#ifdef CONFIG_SPL_BUILD
+#define CONFIG_SPL_DRIVERS_MISC_SUPPORT
+#endif
 #endif
 
 #endif