[openwrt/openwrt] target.mk: Fix features detection for PWM

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/2adc6293f4fc21e264e079126e1395ec9812147d

commit 2adc6293f4fc21e264e079126e1395ec9812147d
Author: Weikai Kong <priv at pppig236.com>
AuthorDate: Sat Mar 15 13:09:54 2025 -0400

    target.mk: Fix features detection for PWM
    
    kmod-leds-pwm depends on @PWM_SUPPORT, instead of adding pwm to the
    features env for specific targets, use the existing detection method.
    
    Signed-off-by: Weikai Kong <priv at pppig236.com>
    Link: https://github.com/openwrt/openwrt/pull/18185
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 include/target.mk | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/target.mk b/include/target.mk
index a4428efab7..f789f2377f 100644
--- a/include/target.mk
+++ b/include/target.mk
@@ -314,6 +314,9 @@ ifeq ($(DUMP),1)
     ifneq ($(CONFIG_PCIEPORTBUS),)
       FEATURES += pcie
     endif
+    ifneq ($(CONFIG_PWM),)
+      FEATURES += pwm
+    endif
     ifneq ($(CONFIG_USB)$(CONFIG_USB_SUPPORT),)
       ifneq ($(CONFIG_USB_ARCH_HAS_HCD)$(CONFIG_USB_EHCI_HCD),)
         FEATURES += usb