MIPS: Place __kernel_entry at the beginning of text section

Mark __kernel_entry as ".head.text" and place HEAD_TEXT before
TEXT_TEXT in the linker script. This ensures that __kernel_entry
will be placed at the beginning of text section.

Drop mips from scripts/head-object-list.txt.

Signed-off-by: Rong Xu <[email protected]>
Reported-by: Chris Packham <[email protected]>
Closes: https://lore.kernel.org/lkml/[email protected]/T/
Tested-by: Chris Packham <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>

arch/mips/kernel/head.S

@@ -59,6 +59,7 @@
 #endif
 	.endm
 
+	__HEAD
 #ifndef CONFIG_NO_EXCEPT_FILL
 	/*
 	 * Reserved space for exception handlers.

arch/mips/kernel/vmlinux.lds.S

@@ -61,6 +61,7 @@ SECTIONS
 	/* read-only */
 	_text = .;	/* Text and read-only data */
 	.text : {
+		HEAD_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT

scripts/head-object-list.txt

@@ -23,7 +23,6 @@ arch/m68k/coldfire/head.o
 arch/m68k/kernel/head.o
 arch/m68k/kernel/sun3-head.o
 arch/microblaze/kernel/head.o
-arch/mips/kernel/head.o
 arch/nios2/kernel/head.o
 arch/openrisc/kernel/head.o
 arch/parisc/kernel/head.o