modsign: change default key details

Change default key details to be more obviously unspecified.

Reported-by: Linus Torvalds <[e-mail]>
Signed-off-by: David Howells <[e-mail]>
Acked-by: James Morris <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

Documentation/module-signing.txt

···
 should be altered from the default:
 
 	[ req_distinguished_name ]
-	O = Magrathea
-	CN = Glacier signing key
-	emailAddress = slartibartfast@magrathea.h2g2
+	#O = Unspecified company
+	CN = Build time autogenerated kernel key
+	#emailAddress = [e-mail]
 
 The generated RSA key size can also be set with:
 

kernel/Makefile

···
 	@echo >>x509.genkey "x509_extensions = myexts"
 	@echo >>x509.genkey
 	@echo >>x509.genkey "[ req_distinguished_name ]"
-	@echo >>x509.genkey "O = Magrathea"
-	@echo >>x509.genkey "CN = Glacier signing key"
-	@echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
+	@echo >>x509.genkey "#O = Unspecified company"
+	@echo >>x509.genkey "CN = Build time autogenerated kernel key"
+	@echo >>x509.genkey "#emailAddress = [e-mail]"
 	@echo >>x509.genkey
 	@echo >>x509.genkey "[ myexts ]"
 	@echo >>x509.genkey "basicConstraints=critical,CA:FALSE"