ARM: tegra: move CONFIG_TEGRAnn

<asm/arch-tegra/tegra.h> needs to use CONFIG_TEGRA* to conditionalize
some definitions, since some modules moved between generations. Move
the definition of CONFIG_TEGRAnn to a header that's included earlier,
so that it's set by the time tegra.h needs to use it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: fix pmc_pwrgate_timer_mult register definition

Register pmc_pwrgate_timer_mult has a different layout on Tegra114 and
Tegra124. Reflect this in pmc.h.

Also, simply write the whole of the register in start_cpu() rather than
doing a read-modify-write; the register is simple enough that the code
can easily construct the entire desired value.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: fix NV_PA_CSITE_BASE for Tegra124

Tegra124 moved the CSITE block's base address. Fix U-Boot to use
the correct address.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
ARM: tegra: simplify halt_avp()

In order to completely halt the AVP processor, we should simply write
FLOW_MODE_STOP without any extra options that allow wakeup. Amend the
code to do this.

I believe that enabling FIQ_1 and IRQ_1 allow the CPU to be awoken by
interrupts. We don't want this; if later SW wishes to use the AVP, it
should be reset and booted from scratch.

Related, the bits that were previously IRQ_1 and FIQ_1 have a slightly
different definition starting with Tegra114, so the values we're
writing don't entirely make sense there anyway.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
mmc: set rca to 1 for MMC cards

U-Boot currently sets MMC cards' RCA register to 0. This value is
reserved according to the specification. Use a value of 1 instead, just
like the Linux kernel.

Signed-off-by: Stephen Warren <swarren@nvidia.com>