[compiler-rt][RISC-V] Save/Restore for E goes with ABI (#95390)

When compiling for the ILP32E/LP64E ABIs, even on a RISC-V machine with
`i`, we should be using the ILP32E/LP64E save/restore routines, so use
the right preprocessor macro.

Author: lenary

compiler-rt/lib/builtins/riscv/restore.S

@@ -22,7 +22,7 @@
 
 #if __riscv_xlen == 32
 
-#ifndef __riscv_32e
+#ifndef __riscv_abi_rve
 
   .globl  __riscv_restore_12
   .type   __riscv_restore_12,@function
@@ -109,7 +109,7 @@ __riscv_restore_0:
 
 #elif __riscv_xlen == 64
 
-#ifndef __riscv_64e
+#ifndef __riscv_abi_rve
 
   .globl  __riscv_restore_12
   .type   __riscv_restore_12,@function

compiler-rt/lib/builtins/riscv/save.S

@@ -18,7 +18,7 @@
 
 #if __riscv_xlen == 32
 
-#ifndef __riscv_32e
+#ifndef __riscv_abi_rve
 
   .globl  __riscv_save_12
   .type   __riscv_save_12,@function
@@ -115,7 +115,7 @@ __riscv_save_0:
 
 #elif __riscv_xlen == 64
 
-#ifndef __riscv_64e
+#ifndef __riscv_abi_rve
 
   .globl  __riscv_save_12
   .type   __riscv_save_12,@function