[openwrt/openwrt] trusted-firmware-a.mk: pass package version as version identifier

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/4c6c1c6dd0db7e37222ae6b7ada416eaaf8bee63

commit 4c6c1c6dd0db7e37222ae6b7ada416eaaf8bee63
Author: Andre Heider <a.heider at gmail.com>
AuthorDate: Fri Jan 22 14:44:08 2021 +0100

    trusted-firmware-a.mk: pass package version as version identifier
    
    Upon boot it now prints:
    NOTICE:  BL1: v2.4(release):OpenWRT v2.4-1 (espressobin-v3-v5-1gb-2cs) (Marvell-devel-18.12.0)
    
    Signed-off-by: Andre Heider <a.heider at gmail.com>
---
 include/trusted-firmware-a.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/trusted-firmware-a.mk b/include/trusted-firmware-a.mk
index b89014b249..ec3e4f4e6b 100644
--- a/include/trusted-firmware-a.mk
+++ b/include/trusted-firmware-a.mk
@@ -73,6 +73,7 @@ define Build/Compile/Trusted-Firmware-A
 		CROSS_COMPILE=$(TARGET_CROSS) \
 		OPENSSL_DIR=$(STAGING_DIR_HOST) \
 		PLAT=$(PLAT) \
+		BUILD_STRING="OpenWRT v$(PKG_VERSION)-$(PKG_RELEASE) ($(VARIANT))" \
 		$(TFA_MAKE_FLAGS)
 endef