toolchain: add 4.4.x choice for headers

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
diff --git a/toolchain/toolchain-common.in b/toolchain/toolchain-common.in
index 6871d8b..014a23d 100644
--- a/toolchain/toolchain-common.in
+++ b/toolchain/toolchain-common.in
@@ -235,10 +235,15 @@
 	bool
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
+
 # This order guarantees that the highest version is set, as kconfig
 # stops affecting a value on the first matching default.
 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
 	string
+	default "4.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 	default "4.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 	default "4.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 	default "4.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1