efi_loader: clean up UEFI sub-system initialization

allow_unaligned(), switch_to_non_secure_mode(), and efi_init_obj_list() are
called in sequence in multiple places.

Move calls to allow_unaligned() and switch_to_non_secure_mode() to
efi_init_obj_list().

Remove unused includes.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_setup.c b/lib/efi_loader/efi_setup.c
index 87db51c..8691d68 100644
--- a/lib/efi_loader/efi_setup.c
+++ b/lib/efi_loader/efi_setup.c
@@ -6,12 +6,22 @@
  */
 
 #include <common.h>
+#include <bootm.h>
 #include <efi_loader.h>
 
 #define OBJ_LIST_NOT_INITIALIZED 1
 
 static efi_status_t efi_obj_list_initialized = OBJ_LIST_NOT_INITIALIZED;
 
+/*
+ * Allow unaligned memory access.
+ *
+ * This routine is overridden by architectures providing this feature.
+ */
+void __weak allow_unaligned(void)
+{
+}
+
 /**
  * efi_init_platform_lang() - define supported languages
  *
@@ -86,6 +96,12 @@
 	if (efi_obj_list_initialized != OBJ_LIST_NOT_INITIALIZED)
 		return efi_obj_list_initialized;
 
+	/* Allow unaligned memory access */
+	allow_unaligned();
+
+	/* On ARM switch from EL3 or secure mode to EL2 or non-secure mode */
+	switch_to_non_secure_mode();
+
 	/* Define supported languages */
 	ret = efi_init_platform_lang();
 	if (ret != EFI_SUCCESS)