automation: introduce fixed randconfig for RISC-V

This patch introduces the anchor riscv-fixed-randconfig,
which includes all configurations that should be disabled for
randconfig builds.

Suggested-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
Reviewed-by: Michal Orzel <michal.orzel@amd.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>

automation/gitlab-ci/build.yaml

@@ -512,6 +512,14 @@ alpine-3.18-gcc-debug-arm64-boot-cpupools:
       CONFIG_BOOT_TIME_CPUPOOLS=y
 
 # RISC-V 64 cross-build
+.riscv-fixed-randconfig:
+  variables: &riscv-fixed-randconfig
+    EXTRA_FIXED_RANDCONFIG: |
+      CONFIG_COVERAGE=n
+      CONFIG_EXPERT=y
+      CONFIG_GRANT_TABLE=n
+      CONFIG_MEM_ACCESS=n
+
 archlinux-current-gcc-riscv64:
   extends: .gcc-riscv64-cross-build
   variables:
@@ -532,8 +540,7 @@ archlinux-current-gcc-riscv64-randconfig:
     CONTAINER: archlinux:current-riscv64
     KBUILD_DEFCONFIG: tiny64_defconfig
     RANDCONFIG: y
-    EXTRA_FIXED_RANDCONFIG:
-      CONFIG_COVERAGE=n
+    <<: *riscv-fixed-randconfig
 
 archlinux-current-gcc-riscv64-debug-randconfig:
   extends: .gcc-riscv64-cross-build-debug
@@ -541,8 +548,7 @@ archlinux-current-gcc-riscv64-debug-randconfig:
     CONTAINER: archlinux:current-riscv64
     KBUILD_DEFCONFIG: tiny64_defconfig
     RANDCONFIG: y
-    EXTRA_FIXED_RANDCONFIG:
-      CONFIG_COVERAGE=n
+    <<: *riscv-fixed-randconfig
 
 # Power cross-build
 debian-bullseye-gcc-ppc64le: