linux-headers: bump 3.2.x series

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/linux-headers/Config.in.host

@@ -158,7 +158,7 @@ endchoice
 config BR2_DEFAULT_KERNEL_HEADERS
 	string
 	default "3.0.101"	if BR2_KERNEL_HEADERS_3_0
-	default "3.2.55"	if BR2_KERNEL_HEADERS_3_2
+	default "3.2.56"	if BR2_KERNEL_HEADERS_3_2
 	default "3.4.85"	if BR2_KERNEL_HEADERS_3_4
 	default "3.6.11"	if BR2_KERNEL_HEADERS_3_6
 	default "3.7.10"	if BR2_KERNEL_HEADERS_3_7