No need to patch config.sub anymore!

RISC-V is in the mainline for all gcc, binutils, and glibc.

patches/binutils

@@ -266,18 +266,6 @@
      case EM_ARM:     /* R_ARM_NONE.  */
      case EM_IA_64:   /* R_IA64_NONE.  */
      case EM_SH:      /* R_SH_NONE.  */
---- original-binutils/config.sub
-+++ binutils/config.sub
-@@ -335,6 +335,9 @@ case $basic_machine in
- 	ms1)
- 		basic_machine=mt-unknown
- 		;;
-+	riscv)
-+		basic_machine=riscv-ucb
-+		;;
-
- 	strongarm | thumb | xscale)
- 		basic_machine=arm-unknown
 --- original-binutils/gas/configure.ac
 +++ binutils/gas/configure.ac
 @@ -453,7 +453,7 @@ changequote([,])dnl

patches/gcc

@@ -1,15 +1,3 @@
---- original-gcc/config.sub
-+++ gcc/config.sub
-@@ -340,6 +340,9 @@ case $basic_machine in
- 	ms1)
- 		basic_machine=mt-unknown
- 		;;
-+	riscv)
-+		basic_machine=riscv-ucb
-+		;;
-
- 	strongarm | thumb | xscale)
- 		basic_machine=arm-unknown
 --- original-gcc/gcc/config.gcc
 +++ gcc/gcc/config.gcc
 @@ -439,6 +439,10 @@ powerpc*-*-*)