Add the rust std as a custom sysroot

user.ld

@@ -1,35 +0,0 @@
-/*
- * ld directives the for barmetal RISCV
- */
-OUTPUT_ARCH(riscv)
-ENTRY(_start)
-
-MEMORY {
-    RAM (wxa) : ORIGIN = 0x0, LENGTH = 128M
-}
-
-SECTIONS {
-    . = 0x0;
-    .text : {
-        KEEP(*(.text._start))
-
-        *(.text .text.*)
-    } > RAM
-
-    .rodata : {
-        *(.rodata .rodata.*)
-    }  > RAM
-
-    .data : {
-        *(.data .data.*)
-    }  > RAM
-
-    .bss : ALIGN(8) {
-        __bss_start = .;
-        *(.bss .bss.*)
-        __bss_end = .;
-    } > RAM
-
-    _heap_start = ALIGN(8);
-    _heap_end = ORIGIN(RAM) + LENGTH(RAM);
-}