LSM: imbed ima calls in the security hooks

Based on discussions on LKML and LSM, where there are consecutive
security_ and ima_ calls in the vfs layer, move the ima_ calls to
the existing security_ hooks.

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
index 53d9764..3d7846d 100644
--- a/security/integrity/ima/Kconfig
+++ b/security/integrity/ima/Kconfig
@@ -3,6 +3,7 @@
 config IMA
 	bool "Integrity Measurement Architecture(IMA)"
 	depends on ACPI
+	depends on SECURITY
 	select SECURITYFS
 	select CRYPTO
 	select CRYPTO_HMAC