[PATCH] imx: spl: Add weak reset_cpu()

[Jun Nie]

Add weak reset_cpu() to reduce redundant code. And it ease the new platforms
that only need a empty function to pass build without below compiling failure.

arch/arm/lib/reset.o: In function `do_reset':
/git/u-boot/arch/arm/lib/reset.c:42: undefined reference to `reset_cpu'
make[1]: *** [scripts/Makefile.spl:526: spl/u-boot-spl] Error 1
make: *** [Makefile:2087: spl/u-boot-spl] Error 2

Signed-off-by: Jun Nie <jun.nie at linaro.org>
---
 arch/arm/mach-imx/spl.c                   | 4 ++++
 board/ronetix/imx7-cm/spl.c               | 4 ----
 board/technexion/pico-imx6ul/spl.c        | 4 ----
 board/technexion/pico-imx7d/spl.c         | 4 ----
 board/toradex/apalis_imx6/apalis_imx6.c   | 4 ----
 board/toradex/colibri_imx6/colibri_imx6.c | 4 ----
 6 files changed, 4 insertions(+), 20 deletions(-)

diff --git a/arch/arm/mach-imx/spl.c b/arch/arm/mach-imx/spl.c
index ef00969a5e..6abbdb8909 100644
--- a/arch/arm/mach-imx/spl.c
+++ b/arch/arm/mach-imx/spl.c
@@ -388,3 +388,7 @@ void *spl_load_simple_fit_fix_load(const void *fit)
 
 	return (void *)new;
 }
+
+__weak void reset_cpu(void)
+{
+}
diff --git a/board/ronetix/imx7-cm/spl.c b/board/ronetix/imx7-cm/spl.c
index d36f734e49..864e95b187 100644
--- a/board/ronetix/imx7-cm/spl.c
+++ b/board/ronetix/imx7-cm/spl.c
@@ -115,10 +115,6 @@ void board_init_f(ulong dummy)
 	board_init_r(NULL, 0);
 }
 
-void reset_cpu(void)
-{
-}
-
 #define USDHC_PAD_CTRL		(PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
 				PAD_CTL_HYS | PAD_CTL_PUE | \
 				PAD_CTL_PUS_PU47KOHM)
diff --git a/board/technexion/pico-imx6ul/spl.c b/board/technexion/pico-imx6ul/spl.c
index 251f5a1b7d..df01b5f8b5 100644
--- a/board/technexion/pico-imx6ul/spl.c
+++ b/board/technexion/pico-imx6ul/spl.c
@@ -147,10 +147,6 @@ void board_init_f(ulong dummy)
 	board_init_r(NULL, 0);
 }
 
-void reset_cpu(void)
-{
-}
-
 #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |		\
 	PAD_CTL_PUS_22K_UP  | PAD_CTL_SPEED_LOW |		\
 	PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
diff --git a/board/technexion/pico-imx7d/spl.c b/board/technexion/pico-imx7d/spl.c
index df5f058577..75d6aa8445 100644
--- a/board/technexion/pico-imx7d/spl.c
+++ b/board/technexion/pico-imx7d/spl.c
@@ -127,10 +127,6 @@ void board_init_f(ulong dummy)
 	board_init_r(NULL, 0);
 }
 
-void reset_cpu(void)
-{
-}
-
 #define USDHC_PAD_CTRL (PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
 	PAD_CTL_HYS | PAD_CTL_PUE | PAD_CTL_PUS_PU47KOHM)
 
diff --git a/board/toradex/apalis_imx6/apalis_imx6.c b/board/toradex/apalis_imx6/apalis_imx6.c
index 8d2642f25d..b59d7cceea 100644
--- a/board/toradex/apalis_imx6/apalis_imx6.c
+++ b/board/toradex/apalis_imx6/apalis_imx6.c
@@ -1056,10 +1056,6 @@ int board_fit_config_name_match(const char *name)
 }
 #endif
 
-void reset_cpu(void)
-{
-}
-
 #endif /* CONFIG_SPL_BUILD */
 
 static struct mxc_serial_plat mxc_serial_plat = {
diff --git a/board/toradex/colibri_imx6/colibri_imx6.c b/board/toradex/colibri_imx6/colibri_imx6.c
index ab2ab587ff..261e46bc35 100644
--- a/board/toradex/colibri_imx6/colibri_imx6.c
+++ b/board/toradex/colibri_imx6/colibri_imx6.c
@@ -1116,10 +1116,6 @@ int board_fit_config_name_match(const char *name)
 }
 #endif
 
-void reset_cpu(void)
-{
-}
-
 #endif /* CONFIG_SPL_BUILD */
 
 static struct mxc_serial_plat mxc_serial_plat = {
-- 
2.25.1