powerpc: Remove superflous function descriptors in assembly only code

We have a number of places where we load the text address of a local
function and indirectly branch to it in assembly. Since it is an
indirect branch binutils will not know to use the function text
address, so that trick wont work.

There is no need for these functions to have a function descriptor
so we can replace it with a label and remove the dot symbol.

Signed-off-by: Anton Blanchard <anton@samba.org>

arch/powerpc/kernel/head_64.S

@@ -639,7 +639,7 @@ __secondary_start:
 	stb	r0,PACAIRQHAPPENED(r13)
 
 	/* enable MMU and jump to start_secondary */
-	LOAD_REG_ADDR(r3, .start_secondary_prolog)
+	LOAD_REG_ADDR(r3, start_secondary_prolog)
 	LOAD_REG_IMMEDIATE(r4, MSR_KERNEL)
 
 	mtspr	SPRN_SRR0,r3
@@ -652,7 +652,7 @@ __secondary_start:
  * zero the stack back-chain pointer and get the TOC virtual address
  * before going into C code.
  */
-_GLOBAL(start_secondary_prolog)
+start_secondary_prolog:
 	ld	r2,PACATOC(r13)
 	li	r3,0
 	std	r3,0(r1)		/* Zero the stack frame pointer	*/
@@ -778,7 +778,7 @@ _INIT_STATIC(start_here_multiplatform)
 	mr	r3,r31
 	bl	early_setup		/* also sets r13 and SPRG_PACA */
 
-	LOAD_REG_ADDR(r3, .start_here_common)
+	LOAD_REG_ADDR(r3, start_here_common)
 	ld	r4,PACAKMSR(r13)
 	mtspr	SPRN_SRR0,r3
 	mtspr	SPRN_SRR1,r4
@@ -786,7 +786,8 @@ _INIT_STATIC(start_here_multiplatform)
 	b	.	/* prevent speculative execution */
 	
 	/* This is where all platforms converge execution */
-_INIT_GLOBAL(start_here_common)
+
+start_here_common:
 	/* relocation is on at this point */
 	std	r1,PACAKSAVE(r13)