Merge tag 'efi-2020-07-rc4' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

Pull request for UEFI sub-system for efi-2020-07-rc4

This patch series addresses the following issues:

* allow compiling with clang
* add missing function descriptions to the HTML documentation
* simplify the validation of UEFI images
* validate load options in the UEFI boot manager

In a preparatory patch a structure definition is moved.

arch/arm/include/asm/global_data.h

@@ -117,4 +117,13 @@ static inline gd_t *get_gd(void)
 #endif
 #endif
 
+static inline void set_gd(volatile gd_t *gd_ptr)
+{
+#ifdef CONFIG_ARM64
+	__asm__ volatile("ldr x18, %0\n" : : "m"(gd_ptr));
+#else
+	__asm__ volatile("ldr r9, %0\n" : : "m"(gd_ptr));
+#endif
+}
+
 #endif /* __ASM_GBL_DATA_H */