crypto: GnuPG based MPI lib - make files (part 3)

Adds the multi-precision-integer maths library which was originally taken
from GnuPG and ported to the kernel by (among others) David Howells.
This version is taken from Fedora kernel 2.6.32-71.14.1.el6.
The difference is that checkpatch reported errors and warnings have been fixed.

This library is used to implemenet RSA digital signature verification
used in IMA/EVM integrity protection subsystem.

Due to patch size limitation, the patch is divided into 4 parts.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/Kconfig b/lib/Kconfig
index 32f3e5ae2be5..4af07ec7f2de 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -276,4 +276,11 @@ config CORDIC
           so its calculations are in fixed point. Modules can select this
           when they require this function. Module will be called cordic.
 
+config MPILIB
+        tristate "Multiprecision maths library"
+        help
+          Multiprecision maths library from GnuPG.
+          It is used to implement RSA digital signature verification,
+          which is used by IMA/EVM digital signature extension.
+
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