Merge tag 'efi-2020-10-rc6' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

Pull request for UEFI sub-system for efi-2020-10-rc6

The following UEFI related issues are fixed:

* restore the global data pointer in the RISC-V trap handler
* install EFI_RNG_PROTOCOL only if we have a random number generator
* display human readable string for EFI_RNG_PROTOCOL in efidebug command

arch/riscv/lib/interrupts.c

@@ -111,6 +111,9 @@ ulong handle_trap(ulong cause, ulong epc, ulong tval, struct pt_regs *regs)
 {
 	ulong is_irq, irq;
 
+	/* An UEFI application may have changed gd. Restore U-Boot's gd. */
+	efi_restore_gd();
+
 	is_irq = (cause & MCAUSE_INT);
 	irq = (cause & ~MCAUSE_INT);