remoteproc: k3_rproc: Rename to ti_k3_arm64_rproc

k3_rproc driver is specifically meant for controlling an arm64
core using TISCI protocol. So rename the driver, Kconfig symbol,
compatible and functions accordingly.

While at it drop this remoteproc selection for a53 defconfig.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
index fa6f111..f54a245 100644
--- a/drivers/remoteproc/Kconfig
+++ b/drivers/remoteproc/Kconfig
@@ -22,15 +22,6 @@
 	help
 	  Say 'y' here to add support for TI' K3 System Controller.
 
-config REMOTEPROC_K3
-	bool "Support for TI's K3 based remoteproc driver"
-	select REMOTEPROC
-	depends on DM
-	depends on ARCH_K3
-	depends on OF_CONTROL
-	help
-	  Say 'y' here to add support for TI' K3 remoteproc driver.
-
 config REMOTEPROC_SANDBOX
 	bool "Support for Test processor for Sandbox"
 	select REMOTEPROC
@@ -50,6 +41,17 @@
 	  Say 'y' here to add support for STM32 Cortex-M4 coprocessors via the
 	  remoteproc framework.
 
+config REMOTEPROC_TI_K3_ARM64
+	bool "Support for TI's K3 based ARM64 remoteproc driver"
+	select REMOTEPROC
+	depends on DM
+	depends on ARCH_K3
+	depends on OF_CONTROL
+	help
+	  Say y here to support TI's ARM64 processor subsystems
+	  on various TI K3 family of SoCs through the remote processor
+	  framework.
+
 config REMOTEPROC_TI_POWER
 	bool "Support for TI Power processor"
 	select REMOTEPROC