Revert "Drop vm_mmap_min_addr checks from scripts and sanity class"

This reverts commit 138df217ef.

We still need the vm_mmap_min_addr set to 0 to run locale generation for
qemu-arm

Signed-off-by: Joshua Lock <josh@linux.intel.com>

meta/classes/sanity.bbclass

@@ -120,6 +120,17 @@ def check_sanity(e):
 		if not check_app_exists("qemu-arm", e.data):
 			messages = messages + "qemu-native was in ASSUME_PROVIDED but the QEMU binaries (qemu-arm) can't be found in PATH"
 
+	if data.getVar('TARGET_ARCH', e.data, True) == "arm":
+                # This path is no longer user-readable in modern (very recent) Linux
+                try:
+                        if os.path.exists("/proc/sys/vm/mmap_min_addr"):
+                                f = file("/proc/sys/vm/mmap_min_addr", "r")
+                                if (f.read().strip() != "0"):
+                                        messages = messages + "/proc/sys/vm/mmap_min_addr is not 0. This will cause problems with qemu so please fix the value (as root).\n\nTo fix this in later reboots, set vm.mmap_min_addr = 0 in /etc/sysctl.conf.\n"
+                                f.close()
+                except:
+                        pass
+
 	for util in required_utilities.split():
 		if not check_app_exists( util, e.data ):
 			missing = missing + "%s," % util