linux-header: update-linux-header script changes

Kernel commit 8a141be3233a changed from using
ASSEMBLY to ASSEMBLER
Updated the update-linux-header script to match

Signed-off-by: Rorie Reyes <rreyes@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250425052401.8287-2-rreyes@linux.ibm.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
diff --git a/scripts/update-linux-headers.sh b/scripts/update-linux-headers.sh
index 8913e4f..b43b8ef 100755
--- a/scripts/update-linux-headers.sh
+++ b/scripts/update-linux-headers.sh
@@ -177,7 +177,7 @@
 
         # Remove everything except the macros from bootparam.h avoiding the
         # unnecessary import of several video/ist/etc headers
-        sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \
+        sed -e '/__ASSEMBLER__/,/__ASSEMBLER__/d' \
                "$hdrdir/include/asm/bootparam.h" > "$hdrdir/bootparam.h"
         cp_portable "$hdrdir/bootparam.h" \
                     "$output/include/standard-headers/asm-$arch"