MIPS: Clean up arch/mips/boot/compressed/ld.script

- Remove unused symbols: _fdata, _text; only _edata and _end are needed by
  head.S
- Remove unused sections: .sbss, .stab, .gptab.sdata, .gptab.sbss
- Change the alignment to 16 bytes to ensure it is greater than any
  fundamental type of a MIPS compiler.
- Clean up comments

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1381/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/boot/compressed/ld.script

@@ -2,59 +2,42 @@
  * ld.script for compressed kernel support of MIPS
  *
  * Copyright (C) 2009 Lemote Inc.
- * Author: Wu Zhangjin <wuzj@lemote.com>
+ * Author: Wu Zhangjin <wuzhanjing@gmail.com>
+ * Copyright (C) 2010 "Wu Zhangjin" <wuzhanjing@gmail.com>
  */
 
 OUTPUT_ARCH(mips)
 ENTRY(start)
 SECTIONS
 {
-	/* . = VMLINUZ_LOAD_ADDRESS */
-	/* read-only */
-	_text = .;	/* Text and read-only data */
+	/* Text and read-only data */
+	/* . = VMLINUZ_LOAD_ADDRESS; */
 	.text : {
-		_ftext = . ;
 		*(.text)
 		*(.rodata)
-	} = 0
-	_etext = .;	/* End of text section */
+	}
+	/* End of text section */
 
-	/* writable */
-	.data	: {	/* Data */
-		_fdata = . ;
+	/* Writable data */
+	.data : {
 		*(.data)
-		/* Put the compressed image here, so bss is on the end. */
+		/* Put the compressed image here */
 		__image_begin = .;
 		*(.image)
 		__image_end = .;
 		CONSTRUCTORS
 	}
-	.sdata	: { *(.sdata) }
-	. = ALIGN(4);
-	_edata  =  .;	/* End of data section */
+	. = ALIGN(16);
+	_edata = .;
+	/* End of data section */
 
 	/* BSS */
-	__bss_start = .;
-	_fbss = .;
-	.sbss	: { *(.sbss) *(.scommon) }
 	.bss : {
-		*(.dynbss)
 		*(.bss)
-		*(COMMON)
 	}
-	.  = ALIGN(4);
+	. = ALIGN(16);
 	_end = .;
 
-	/* These are needed for ELF backends which have not yet been converted
-	 * to the new style linker.  */
-
-	.stab 0 : { *(.stab) }
-	.stabstr 0 : { *(.stabstr) }
-
-	/* These must appear regardless of  .  */
-	.gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
-	.gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
-
 	/* Sections to be discarded */
 	/DISCARD/ : {
 		*(.MIPS.options)