arm64: linker: lld: Handle symtab/strtab/shstrtab to fix warnings

lld will produce warnings for the symtab, strtab, and shstrtab sections
if --orphan-handling=warn is specified and there are no matching rules
in the linker script for these sections.

Handle these sections when building with lld to prevent the warnings.

Signed-off-by: Jonathon Penix <[email protected]>

Author: jonathonpenix

include/zephyr/arch/arm64/scripts/linker.ld

@@ -339,6 +339,15 @@ SECTIONS
 
     /DISCARD/ : { *(.note.GNU-stack) }
 
+/* Output section descriptions are needed for these sections to suppress
+ * warnings when "--orphan-handling=warn" is set for lld.
+ */
+#if defined(CONFIG_LLVM_USE_LLD)
+    SECTION_PROLOGUE(.symtab, 0,) { *(.symtab) }
+    SECTION_PROLOGUE(.strtab, 0,) { *(.strtab) }
+    SECTION_PROLOGUE(.shstrtab, 0,) { *(.shstrtab) }
+#endif
+
     /* Sections generated from 'zephyr,memory-region' nodes */
     LINKER_DT_SECTIONS()