Add numpad_5x6 layout support for Prime M keyboard (#5149)

* Add numpad_5x6 layout support for Prime M keyboard

* fix default layout

keyboards/primekb/prime_m/keymaps/numpad/keymap.c

@@ -0,0 +1,33 @@
+/* Copyright 2018 Jumail Mundekkat
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+	[0] = LAYOUT_numpad_5x6(
+		KC_ESC,  KC_LPRN, KC_RPRN, KC_PSLS, KC_PAST, KC_PMNS,
+		KC_A,    KC_B,    KC_P7,   KC_P8,   KC_P9,
+		KC_C,    KC_D,    KC_P4,   KC_P5,   KC_P6,   KC_PPLS,
+		KC_E,    KC_F,    KC_P1,   KC_P2,   KC_P3,
+		KC_LCTL, TG(1),      KC_P0,       KC_PDOT, KC_PENT
+    ),
+	[1] = LAYOUT_numpad_5x6(
+		RESET,   KC_LPRN, KC_RPRN, KC_PSLS, KC_PAST, KC_PMNS,
+		KC_A,    KC_B,    KC_HOME, KC_UP,   KC_PGUP,
+		KC_C,    KC_D,    KC_LEFT, KC_NO,   KC_RGHT, KC_PPLS,
+		KC_E,    KC_F,    KC_END,  KC_DOWN, KC_PGDN,
+		KC_LCTL, _______,      KC_INS,      KC_DEL,  KC_PENT
+    ),
+};