[Buildroot] [git commit branch/2021.02.x] package/gcc: fix xtensa overlay for gcc ccache hash

commit: https://git.buildroot.net/buildroot/commit/?id=c2475ccb4ccc4619d83980ea5e3add7cb7c34c9f
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2021.02.x

Commit b3b60706221d (arch/xtensa: allow specifying path to tarball file)
missed a place where the xtensa overlay was referenced, thus breaking
the calculation for the ccache hash.

Signed-off-by: Yann E. MORIN <redacted>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle (Essensium/Mind) <redacted>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Yann E. MORIN <redacted>
(cherry picked from commit b98ed34072f07f0c367b23d1e018f5b9487b3c34)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 package/gcc/gcc.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk
index 5e419f7ede..28b6a0c95c 100644
--- a/package/gcc/gcc.mk
+++ b/package/gcc/gcc.mk

@@ -286,7 +286,7 @@ HOST_GCC_COMMON_CCACHE_HASH_FILES += \
 		$(addsuffix /gcc/$(GCC_VERSION)/*.patch,$(call qstrip,$(BR2_GLOBAL_PATCH_DIR))) \
 		$(addsuffix /gcc/*.patch,$(call qstrip,$(BR2_GLOBAL_PATCH_DIR)))))
 ifeq ($(BR2_xtensa),y)
-HOST_GCC_COMMON_CCACHE_HASH_FILES += $(ARCH_XTENSA_OVERLAY_TAR)
+HOST_GCC_COMMON_CCACHE_HASH_FILES += $(ARCH_XTENSA_OVERLAY_FILE)
 endif
 
 # _CONF_OPTS contains some references to the absolute path of $(HOST_DIR)

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