The socfpga_boot_secondary is correctly marked as __cpuinit but references
secondary_trampoline, which was introduced into the init section, causing
this build warning:

WARNING: vmlinux.o(.cpuinit.text+0xf90): Section mismatch in reference from the function socfpga_boot_secondary() to the variable .init.text:secondary_trampoline
The function __cpuinit socfpga_boot_secondary() references
a variable __init secondary_trampoline.
If secondary_trampoline is only used by socfpga_boot_secondary then
annotate secondary_trampoline with a matching annotation.

The solution is to mark secondary_trampoline as cpuinit as well.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Building a multiplatform kernel with combined armv7 and armv6
kernel does not work with the socfpga smp code, which contains
v7-only instructions. Since this code never runs on armv6,
we can annotate the assmebly with .arch   armv7-a, as suggested
by Russell King.

[arnd: reword commit message]
Signed-off-by: NPavel Machek <pavel@denx.de>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable SMP for the SOCFPGA platform.
Signed-off-by: NPavel Machek <pavel@denx.de>
Signed-off-by: NDinh Nguyen <dinguyen@altera.com>
Reviewed-by: NRob Herring <rob.herring@calxeda.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>