powerpc/vdso: Inconditionally use CFUNC macro

During merge of commit 4e991e3 ("powerpc: add CFUNC assembly
label annotation") a fallback version of CFUNC macro was added at
the last minute, so it can be used inconditionally.

Fixes: 4e991e3 ("powerpc: add CFUNC assembly label annotation")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/0fa863f2f69b2ca4094ae066fcf1430fb31110c9.1724313540.git.christophe.leroy@csgroup.eu

Author: chleroy

arch/powerpc/kernel/vdso/gettimeofday.S

@@ -38,11 +38,7 @@
 	.else
 	addi		r4, r5, VDSO_DATA_OFFSET
 	.endif
-#ifdef __powerpc64__
 	bl		CFUNC(DOTSYM(\funct))
-#else
-	bl		\funct
-#endif
 	PPC_LL		r0, PPC_MIN_STKFRM + PPC_LR_STKOFF(r1)
 #ifdef __powerpc64__
 	PPC_LL		r2, PPC_MIN_STKFRM + STK_GOT(r1)