Add riscv32 mathu inculde file, redirecting to ../riscv64/mathu.inc file (this file seems to have no 64-bit specific code)

git-svn-id: trunk@43530 -

.gitattributes

@@ -11555,6 +11555,7 @@ rtl/riscv32/cpuh.inc svneol=native#text/plain
 rtl/riscv32/int64p.inc svneol=native#text/plain
 rtl/riscv32/makefile.cpu svneol=native#text/plain
 rtl/riscv32/math.inc svneol=native#text/plain
+rtl/riscv32/mathu.inc svneol=native#text/plain
 rtl/riscv32/riscv32.inc svneol=native#text/plain
 rtl/riscv32/set.inc svneol=native#text/plain
 rtl/riscv32/setjump.inc svneol=native#text/plain

rtl/riscv32/mathu.inc

@@ -0,0 +1 @@
+{$i ../riscv64/mathu.inc}