crypto: jitterentropy - Put constants on the right side of the expression

This patch fixes the following checkpatch.pl warnings:

crypto/jitterentropy.c:600: WARNING: Comparisons should place the constant on the right side of the test
crypto/jitterentropy.c:681: WARNING: Comparisons should place the constant on the right side of the test
crypto/jitterentropy.c:772: WARNING: Comparisons should place the constant on the right side of the test
crypto/jitterentropy.c:829: WARNING: Comparisons should place the constant on the right side of the test

Signed-off-by: Milan Djurovic <mdjurovic@zohomail.com>
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>