arm64: smccc: use asm EXPORT_SYMBOL()

For a while now it's been possible to use EXPORT_SYMBOL() in assembly
files, which allows us to place exports immediately after assembly
functions, as we do for C functions.

As a step towards removing arm64ksyms.c, let's move the SMCCC exports to
the assembly file the functions are defined in.

There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

arch/arm64/kernel/arm64ksyms.c

@@ -26,7 +26,6 @@
 #include <linux/syscalls.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
-#include <linux/arm-smccc.h>
 #include <linux/kprobes.h>
 
 #include <asm/checksum.h>
@@ -64,7 +63,3 @@ EXPORT_SYMBOL(_mcount);
 NOKPROBE_SYMBOL(_mcount);
 #endif
 
-	/* arm-smccc */
-EXPORT_SYMBOL(__arm_smccc_smc);
-EXPORT_SYMBOL(__arm_smccc_hvc);
-

arch/arm64/kernel/smccc-call.S

@@ -13,7 +13,9 @@
  */
 #include <linux/linkage.h>
 #include <linux/arm-smccc.h>
+
 #include <asm/asm-offsets.h>
+#include <asm/assembler.h>
 
 	.macro SMCCC instr
 	.cfi_startproc
@@ -40,6 +42,7 @@
 ENTRY(__arm_smccc_smc)
 	SMCCC	smc
 ENDPROC(__arm_smccc_smc)
+EXPORT_SYMBOL(__arm_smccc_smc)
 
 /*
  * void arm_smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
@@ -50,3 +53,4 @@ ENDPROC(__arm_smccc_smc)
 ENTRY(__arm_smccc_hvc)
 	SMCCC	hvc
 ENDPROC(__arm_smccc_hvc)
+EXPORT_SYMBOL(__arm_smccc_hvc)