evm: Move evm_hmac and evm_hash from evm_main.c to evm_crypto.c

These variables are not used where they are was defined.  There is no
point in declaring them there as extern.  Move and constify them, saving
2 bytes.

Function                                     old     new   delta
init_desc                                    273     271      -2
Total: Before=2112094, After=2112092, chg -0.00%
Signed-off-by: Hernán Gonzalez <hernan@vanguardiasur.com.ar>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>

security/integrity/evm/evm.h

@@ -31,8 +31,6 @@
 		       EVM_ALLOW_METADATA_WRITES)
 
 extern int evm_initialized;
-extern char *evm_hmac;
-extern char *evm_hash;
 
 #define EVM_ATTR_FSUUID		0x0001
 

security/integrity/evm/evm_crypto.c

@@ -37,6 +37,9 @@ static DEFINE_MUTEX(mutex);
 
 static unsigned long evm_set_key_flags;
 
+static char * const evm_hmac = "hmac(sha1)";
+static char * const evm_hash = "sha1";
+
 /**
  * evm_set_key() - set EVM HMAC key from the kernel
  * @key: pointer to a buffer with the key data

security/integrity/evm/evm_main.c

@@ -33,8 +33,6 @@ int evm_initialized;
 static char *integrity_status_msg[] = {
 	"pass", "pass_immutable", "fail", "no_label", "no_xattrs", "unknown"
 };
-char *evm_hmac = "hmac(sha1)";
-char *evm_hash = "sha1";
 int evm_hmac_attrs;
 
 char *evm_config_xattrnames[] = {