ipq-wifi: update to Git HEAD (2026-05-18)

7d851accdab1 ipq40xx: add Linksys MR9000 BDF Link: openwrt/firmware_qca-wireless#114
903e04995ad7 ipq5018: Add BDF for Xiaomi Redmi AX5400
e20f4c6ff197 qcn9074: Add BDF for Xiaomi Redmi AX5400

Signed-off-by: Robert Marko <robimarko@gmail.com>
(cherry picked from commit 51b5c9d)

Author: robimarko

package/firmware/ipq-wifi/Makefile

@@ -6,9 +6,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/firmware/qca-wireless.git
-PKG_SOURCE_DATE:=2026-05-05
-PKG_SOURCE_VERSION:=fc4cf4873873b20e454fba257452cd31fec502bb
-PKG_MIRROR_HASH:=9e02a31c27234f7570743578b473c597b69c89e244696de5b0bee87f4009c23c
+PKG_SOURCE_DATE:=2026-05-18
+PKG_SOURCE_VERSION:=e20f4c6ff197823762319e4b7e31af01816503cf
+PKG_MIRROR_HASH:=a0109d830c474aeca2716496cb2eab05319c4d6671ae2d02c43449a94da183fa
 PKG_FLAGS:=nonshared
 
 include $(INCLUDE_DIR)/package.mk