linker: add orphan sections to linker script

Add missing sections being reported as orphan with latest compiler
version for x86 and discard them. Do the same on ARM.

Those sections are used for dynamic linking which we do not support in
Zephyr.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

include/arch/arm/cortex_m/scripts/linker.ld

@@ -113,12 +113,12 @@ SECTIONS
      * .plt and .iplt are here according to 'arm-zephyr-elf-ld --verbose',
      * before text section.
      */
-    SECTION_PROLOGUE(.plt,,)
+    /DISCARD/ :
 	{
 	*(.plt)
 	}
 
-    SECTION_PROLOGUE(.iplt,,)
+    /DISCARD/ :
 	{
 	*(.iplt)
 	}
@@ -293,8 +293,7 @@ SECTIONS
      * These are here according to 'arm-zephyr-elf-ld --verbose',
      * before data section.
      */
-    SECTION_PROLOGUE(.got,,)
-	{
+    /DISCARD/ : {
 	*(.got.plt)
 	*(.igot.plt)
 	*(.got)

include/arch/x86/linker.ld

@@ -69,6 +69,17 @@ SECTIONS
 
 #include <linker/rel-sections.ld>
 
+    /DISCARD/ :
+	{
+	*(.plt)
+	}
+
+    /DISCARD/ :
+	{
+	*(.iplt)
+	}
+
+
 	GROUP_START(ROMABLE_REGION)
 #ifdef CONFIG_REALMODE
 	/* 16-bit sections */
@@ -164,7 +175,15 @@ SECTIONS
 	_image_rom_size = _image_rom_end - _image_rom_start;
 
 	GROUP_END(ROMABLE_REGION)
-
+	/*
+	 * Needed for dynamic linking which we do not have, do discard
+	 */
+	/DISCARD/ : {
+		*(.got.plt)
+		*(.igot.plt)
+		*(.got)
+		*(.igot)
+	}
 	/* RAMABLE_REGION */
 	GROUP_START(RAMABLE_REGION)