Update riscv_compliance to riscv/riscv-compliance@5a978cf

Update code from upstream repository https://github.com/riscv/riscv-
compliance.git to revision 5a978cfd444d5e640150d46703deda99057b2bbb

Signed-off-by: Philipp Wagner <phw@lowrisc.org>
diff --git a/sw/vendor/patches/riscv_compliance/0001-Add-configurable-trap-alignment-and-entry-point-to-p.patch b/sw/vendor/patches/riscv_compliance/0001-Add-configurable-trap-alignment-and-entry-point-to-p.patch
index 5b55077..7c5015b 100644
--- a/sw/vendor/patches/riscv_compliance/0001-Add-configurable-trap-alignment-and-entry-point-to-p.patch
+++ b/sw/vendor/patches/riscv_compliance/0001-Add-configurable-trap-alignment-and-entry-point-to-p.patch
@@ -1,4 +1,4 @@
-From 12ff08f286e3045323375877017286afc54dcf39 Mon Sep 17 00:00:00 2001
+From e8b82ff045fca264917a7c5539bfcbe8ed22b7a0 Mon Sep 17 00:00:00 2001
 From: Greg Chadwick <gac@lowrisc.org>
 Date: Wed, 15 Apr 2020 15:45:31 +0100
 Subject: [PATCH 1/3] Add configurable trap alignment and entry point to p
@@ -95,5 +95,5 @@
      # increment return address
      csrr    x30, mepc
 -- 
-2.26.2
+2.28.0