crossgcc: Upgrade GMP to v6.2.0

gmp_freebsd-configure.patch is integrated in upstream so we don't need
it anymore.
Changes: https://gmplib.org/gmp6.2

Change-Id: I8404872f1b65e9173c1fcbd24d7da7bdd7937503
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38465
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/crossgcc/buildgcc

@@ -33,7 +33,7 @@ BOOTSTRAP=0
 THREADS=1
 
 # GCC toolchain version numbers
-GMP_VERSION=6.1.2
+GMP_VERSION=6.2.0
 MPFR_VERSION=4.0.2
 MPC_VERSION=1.1.0
 GCC_VERSION=8.3.0

util/crossgcc/patches/gmp-6.1.2_freebsd-configure.patch

@@ -1,20 +0,0 @@
---- gmp-6.1.2.orig/configure	2016-12-16 16:45:32.000000000 +0100
-+++ gmp-6.1.2/configure	2017-03-08 14:26:11.194245000 +0100
-@@ -6776,7 +6776,7 @@
-   long i;
-   for (i = 0; i < 88 + 1; i++)
-     a[i] = ~0L;
--  r = malloc (10000 * sizeof (unsigned long));
-+  r = calloc (10000, sizeof (unsigned long));
-   r2 = r;
-   for (i = 0; i < 528; i += 23)
-     {
-@@ -8394,7 +8394,7 @@
-   long i;
-   for (i = 0; i < 88 + 1; i++)
-     a[i] = ~0L;
--  r = malloc (10000 * sizeof (unsigned long));
-+  r = calloc (10000, sizeof (unsigned long));
-   r2 = r;
-   for (i = 0; i < 528; i += 23)
-     {

util/crossgcc/sum/gmp-6.1.2.tar.xz.cksum

@@ -1 +0,0 @@
-9dc6981197a7d92f339192eea974f5eca48fcffe  tarballs/gmp-6.1.2.tar.xz

util/crossgcc/sum/gmp-6.2.0.tar.xz.cksum

@@ -0,0 +1 @@
+052a5411dc74054240eec58132d2cf41211d0ff6  tarballs/gmp-6.2.0.tar.xz