clk: tegra: Rename Tegra124 EMC clock source file

This code is only used on Tegra124, so rename it accordingly to make it
more consistent with other file names.

While at it, also get rid of the TEGRA_CLK_EMC Kconfig symbol that's
really just an alias for TEGRA124_EMC.
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/clk/tegra/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
-config TEGRA_CLK_EMC
-	def_bool y
-	depends on TEGRA124_EMC
-
 config CLK_TEGRA_BPMP
 	def_bool y
 	depends on TEGRA_BPMP

drivers/clk/tegra/Makefile

@@ -14,7 +14,6 @@ obj-y					+= clk-tegra-audio.o
 obj-y					+= clk-tegra-periph.o
 obj-y					+= clk-tegra-fixed.o
 obj-y					+= clk-tegra-super-gen4.o
-obj-$(CONFIG_TEGRA_CLK_EMC)		+= clk-emc.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += clk-tegra20.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= clk-tegra20-emc.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)         += clk-tegra30.o
@@ -22,6 +21,7 @@ obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= clk-tegra20-emc.o
 obj-$(CONFIG_ARCH_TEGRA_114_SOC)	+= clk-tegra114.o
 obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= clk-tegra124.o
 obj-$(CONFIG_TEGRA_CLK_DFLL)		+= clk-tegra124-dfll-fcpu.o
+obj-$(CONFIG_TEGRA124_EMC)		+= clk-tegra124-emc.o
 obj-$(CONFIG_ARCH_TEGRA_132_SOC)	+= clk-tegra124.o
 obj-y					+= cvb.o
 obj-$(CONFIG_ARCH_TEGRA_210_SOC)	+= clk-tegra210.o

drivers/clk/tegra/clk.h

@@ -866,7 +866,7 @@ void tegra_super_clk_gen5_init(void __iomem *clk_base,
 			void __iomem *pmc_base, struct tegra_clk *tegra_clks,
 			struct tegra_clk_pll_params *pll_params);
 
-#ifdef CONFIG_TEGRA_CLK_EMC
+#ifdef CONFIG_TEGRA124_EMC
 struct clk *tegra_clk_register_emc(void __iomem *base, struct device_node *np,
 				   spinlock_t *lock);
 #else